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DotA 2 - Oracle Explained
 
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Discord ► https://discord.gg/V6JzdJ5 Come and hang out! Credits: Background Music 1: Viilo - "Summit" [Argofox] Background Music 2: Rival x Cadmium feat. Harley Bird - "Seasons" [NoCopyrightSounds] Intro & Outro Music: Jan Chmelar - "Ladies Lounge 3" [Epidemic Sound] Channel Assets: These are the places where I find my music! Argofox ► https://www.youtube.com/channel/UC56Qctnsu8wAyvzf4Yx6LIw Bensound ► www.bensound.com Epidemic Sound ► http://www.epidemicsound.com NoCopyrightSounds ► https://www.youtube.com/channel/UC_aEa8K-EOJ3D6gOs7HcyNg TeknoAXE ► https://www.youtube.com/channel/UCtgf00GvfFQVsYBA7V7RwUw
Views: 4839 Mr_Bean DotA
NIH Global Unique Identifier (GUID)
 
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Overview of the GUID tool and the GUID creation process, including elements required to generate a GUID.
Views: 1138 NCATS NIH
How to Use VirtualBox (Beginners Guide)
 
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In a recent video in the “Free Software” series, I showed you VirtualBox, which is a free and open source solution to be able to run other operating systems virtually on your PC. In this beginner’s guide, I will show you how to set-up and use VirtualBox. In addition, I’ll also show you how to install and run Ubuntu, which is one of the most popular of the Linux distributions. If you're new, Subscribe! ▶ https://www.youtube.com/techgumbo Share This Video ▶ https://youtu.be/sB_5fqiysi4 0:30 What is VirtualBox. 1:16 Download. 1:46 Install. 2:29 Launch VirtualBox. 2:42 Download ISO for Ubuntu. 3:35 Create Guest OS. 6:41 Settings to complete the Guest OS process. 8:54 Install Ubuntu. 11:07 Tips for using Ubuntu. 13:15 Shut down Ubuntu. “Free Software” Playlist https://www.youtube.com/watch?v=gM8plsUfkTA&list=PLunpbmfrhFAWJA4lSDmRYJdcsEpjAuRdz VirtualBox https://www.virtualbox.org/wiki/Downloads Ubuntu https://www.ubuntu.com/desktop TechGumbo is a leading source for the technology that we use each day. Whether it’s discussing computer operating system tricks, the latest tips for your mobile phone, finding out about the newest gadgets, or beginners guides that show you how to use popular software, TechGumbo has boundless topics on technology for the astute YouTube viewer.
Views: 289932 TechGumbo
Working with Orchestrated Integrations in Oracle Integration Cloud Service
 
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When should you use an Orchestration integration? How do you create an Orchestration integration? This video shows you how. Learn more about Orchestration: https://docs.oracle.com/cloud/latest/intcs_gs/ICSUG/GUID-F66ABE41-0A69-4A73-BC3D-0CE36FA78C4D.htm#ICSUG-GUID-36A90FF0-F0D4-4F81-9028-41971C7D100B ================================= For more information, see http://www.oracle.com/goto/oll Copyright © 2016 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Oracle DV: How to build viz plugins using SDK
 
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Oracle Data Visualization SDK Reference https://docs.oracle.com/middleware/bidv1221/desktop/BIDVD/GUID-6CCA6D3D-1877-4F7E-B337-73DC68D84797.htm Oracle Data Visualization SDK JavaScript Reference https://docs.oracle.com/middleware/bidv1221/desktop/DVDJS/index.html
Views: 1405 ORACLE ANALYTICS
Oracle Enterprise Manager: Metric Extensions
 
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ic extensions provide you with the ability to extend Oracle's monitoring capabilities to monitor conditions specific to your IT environment. This provides you with a comprehensive view of your environment. Furthermore, metric extensions allow you to simplify your IT organization's operational processes by leveraging Enterprise Manager as the single central monitoring tool for your entire datacenter instead of relying on other monitoring tools to provide this supplementary monitoring. See Enterprise manager online documentation for more information: http://docs.oracle.com/cd/E73210_01/EMADM/GUID-4FCB90EC-5335-4F92-BFA7-CB1442000353.htm#EMADM10032 ================================= To improve the video quality, click the gear icon and set the Quality to 1080p/720p HD. For more information, see http://www.oracle.com/goto/oll Copyright © 2016 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Oracle Enterprise Manager: Integration with 3rd Party Systems
 
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Enterprise Manager has a number of management connectors to integrate with popular 3rd party management systems. The management connectors leverage EM’s connector framework in order to forward event and incident details to 3rd party systems. Besides the management connectors, Enterprise Manager also has a number of Advanced Notification Methods when the use case is more complicated or when there is no management connector available. Enterprise Manager is highly extensible and provides a Connector Framework API which leverages web service calls to create and update events or tickets in 3rd party systems. We provide a Connectors Integration Guide with instructions and examples to build your own connector. See Enterprise manager online documentation for more information: http://docs.oracle.com/cd/E73210_01/nav/connectors.htm http://docs.oracle.com/cd/E73210_01/EMADM/GUID-B48F6A84-EE89-498D-94E0-5DE1E7A0CFBC.htm#EMADM9066 http://docs.oracle.com/cd/E73210_01/EMCIG/GUID-FBA700A1-B2F0-4A7B-980C-E4816A21FAD4.htm#EMCIG169 Copyright © 2017 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Oracle Enterprise Manager: Intelligent Incident Compression
 
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Beginning with Enterprise Manager 13c, Intelligent Incident Compression allows multiple events to be automatically grouped into a single incident. This recording consists of a product overview (8 min), followed by a demo (5 min). See Enterprise manager online documentation for more information: http://docs.oracle.com/cd/E73210_01/EMADM/GUID-D0428ED9-FCA8-44D6-AB5B-B8FF4139BF0D.htm#EMADM15277 ================================= To improve the video quality, click the gear icon and set the Quality to 1080p/720p HD. For more information, see http://www.oracle.com/goto/oll and http://docs.oracle.com Copyright © 2017 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
How To Integrate Oracle Weblogic Server With Oracle Enterprise Manager (OEM) Cloud Control
 
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In this video demo I will show you how to integrate Oracle Weblogic Server with Oracle Enterprise Manager Cloud Control (OEM) Have a look at my blog for step by step instructions and screenshots I used in this video. Blog Link : http://prasaddomala.com/how-to-integrate-oracle-weblogic-server-with-oracle-enterprise-manager-cloud-control-oem Oracle Enterprise Manager Cloud Control (OEM) Installation & Configuration https://www.youtube.com/watch?v=EKd_Mr_c1XU http://prasaddomala.com/oracle-enterprise-manager-cloud-control-13c-installation-configuration/ Weblogic Server OEM Metric Reference Guide http://docs.oracle.com/cd/E73210_01/EMASM/GUID-3E63D9C6-65B4-4B46-8BEB-E855D009CF8D.htm#EMASM3202
Views: 3455 Prasad Domala
Virtual Box - How to set a new UUID to a Virtual Machine
 
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How to set a new UUID on a VM in Oracle VM Virtual Box, this error can happen if circumstances surrounding the VDI file change such as name, location etc. This is done using the vboxmanage command line tool Steps: 1 - Right click "Command Prompt" and then click "Run as Administrator" 2 - Then use CD and DIR to browse to: C:\Program files\Oracle\Virtual Box 3 - Then type: vboxmanage internalcommands sethduuid "VDI filepath and filename" For example: vboxmanage internalcommands sethduuid "D:\vm\Windows7virtualmachine.vdi" Song name: DM Galaxy - Etiquette - Free Background Music Link to song: https://youtu.be/ZD_Urg9fOs0 Song created by: DM Galaxy: YouTube - http://goo.gl/5Tezt7 Facebook - https://www.facebook.com/DmGalaxy SoundCloud - https://soundcloud.com/dmgalaxy
Views: 3535 WitherTech
Select and Where: Databases for Developers #4
 
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You query a database table with a select statement. But unless you provide a where clause, this will return you all the rows! That's a lot for you to sift through if your table has millions, billions or trillions of rows. In this episode Chris discusses common conditions for filtering rows so the database only returns what you need. Further reading: Oracle Database 12.2 select syntax: http://docs.oracle.com/database/122/SQLRF/SELECT.htm#SQLRF01702 Oracle Database Concepts Guide on Select: http://docs.oracle.com/database/122/CNCPT/sql.htm#GUID-702909E1-B214-4D30-A0F9-5A4335C2BA4A Take the Databases for Developers FREE SQL course at https://devgym.oracle.com/devgym/database-for-developers.html Daily SQL tips on Twitter: https://twitter.com/SQLDaily Chris on Twitter: https://twitter.com/ChrisRSaxon All Things SQL Blog: https://blogs.oracle.com/sql ============================ The Magic of SQL with Chris Saxon Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Views: 5631 The Magic of SQL
Set Up and Log In to Your First Oracle Container Cloud Service Instance
 
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Find out how to get from your Oracle Cloud welcome mail to a working instance of Oracle Container Cloud Service, where you can manage your Docker environment. For more information, see the documentation at http://www.oracle.com/pls/topic/lookup?ctx=cloud&id=CONTU-GUID-CA18910C-AFC9-432E-AB1D-ADE87EAB5E63 ================================= To improve the video quality, click the gear icon and set the Quality to 1080p/720p HD. For more information, see http://www.oracle.com/goto/oll Copyright © 2017 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Hierarchical Queries: Databases for Developers #16
 
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Often data contains a parent-child relationship between rows in the same table. For example, company org charts and family trees. You can use the power of SQL to traverse these hierarchical relationships. There are two ways to do this in Oracle Database: - Connect By - Recursive With Watch this video to learn about data trees and find out how these work! Further reading: Hierarchical queries in the docs: https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/Hierarchical-Queries.html#GUID-0118DF1D-B9A9-41EB-8556-C6E7D6A5A84E Recursive subquery factoring in 11.2: https://oracle-base.com/articles/11g/recursive-subquery-factoring-11gr2 Take the course! https://devgym.oracle.com/pls/apex/dg/class/databases-for-developers-next-level.html Need help with SQL? Ask us over on AskTOM: https://asktom.oracle.com Twitter: https://twitter.com/ChrisRSaxon Daily SQL Twitter tips: https://twitter.com/SQLDaily All Things SQL blog: https://blogs.oracle.com/sql/ ============================ The Magic of SQL with Chris Saxon Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Views: 2129 The Magic of SQL
guid generator in hibernate
 
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Working of guid generator in hbiernate
Views: 153 Gopi krishna
Oracle Enterprise Manager: Advanced Threshold Management
 
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Advanced Thresholds allow you to define and manage alert thresholds that are either adaptive (self-adjusting) or time-based (static). There are monitoring situations in which different workloads for a target occur at regular (expected) intervals. Under these conditions, a static alert threshold would prove to be inaccurate. For example, the accurate alert thresholds for a database performing Online Transaction Process (OLTP) during the day and batch processing at night would be different. Similarly, database workloads can change based purely on different time periods, such as weekday versus weekend. In both these situations, fixed, static values for thresholds might result in false alert reporting. See Enterprise manager online documentation for more information: http://docs.oracle.com/cd/E73210_01/EMADM/GUID-02356AB5-4B03-46AE-8354-2E9517A8F439.htm#EMADM15123 ================================= To improve the video quality, click the gear icon and set the Quality to 1080p/720p HD. For more information, see http://www.oracle.com/goto/oll Copyright © 2016 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
How to Generate Random Alphanumeric in Java
 
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Generate Random Alphanumeric in Java. http://www.tutorialesje.com/
Views: 1168 JE Tutoriales
Omnichannel Services - Use UUID Keys to Your Data
 
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Today I'm going to talk to you about why it's important to use universally unique identifiers (UUID) as keys to your data, and I will show you some of the problems that they can solve. In the distributed computing world of mobile devices and an internet of things it becomes almost impossible to have one source for key generation, so each device need to be able to create their own keys, while still making sure that those keys are unique. The answer is to use UUIDs, which is a standard by the Open Software Foundation, and there's an industry wide support for them (http://en.wikipedia.org/wiki/Universally_unique_identifier). For example, PHP, Java, .NET, Oracle, and MySQL all have ways to generate them, and SQL Server and ProgresSQL even has native UUID data types. Let talk about the benefits of using UUIDs, and I will start by pointing out some of the problems they can solve. When doing our data models, we have been taught to normalize our databases so that we find primary keys as one of the columns or a combination of columns. If not found, we usually add a generated id, such as an automatically incremented integer. One problem with using a multi-column key is that the queries become more complex as each column needs to be included in each join, and more complex means a lower performance and also larger indices. Another problem is that it's harder for the consumer of the data to know which columns are included in the key. With auto-generated keys, we get a simpler join, but a problem is that each consumer need to ask the generator for a valid key, and another problem is that there will be "holes" in the sequence when rows are deleted. Yet another problem is that any data type used has a fixed limit (even if huge), so it will eventually run out. Also, it becomes tricky for a client to find out which id was generated during an insert. With UUIDs, we get the same benefit of the simpler join as we got with the auto-generated keys, but now each user of the data can generate new keys and rows, without access to any central key generator -- it can even happen while disconnected. So any device or thing can generate a key and the maximum 3.4 x 10^38 combinations both ensure that each key is unique and that there's no practical limit of keys. But even UUIDs have drawbacks, and the most obvious is that they are hard to remember. Therefore, it's a good practice to provide ways of accessing data using attributes that are easier to remember. For example, provide a service that can get an order by providing an order number in addition to getting it using the primary key, the UUID. So make sure that you use UUIDs as keys to your data to allow distributed key generation, simplified joins, and get better performance. Follow me on Twitter https://twitter.com/chrisforsberg Visit my site http://cforsberg.com
Views: 5014 Chris Forsberg
Hibernate GenerationType.SEQUENCE primary key generation strategy
 
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In this video you will learn how GenerationType.SEQUENCE primary key generation strategy works. Below is the GitHub link to download source: https://github.com/kishanjavatrainer/HibernatePrimaryKeyGenExample3.git
Views: 1842 KK JavaTutorials
Delete and Truncate: Databases for Developers #9
 
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Oracle Database offers two commands for removing data from tables: delete and truncate. In this video Chris discusses the difference between these methods. He also covers how to "remove" rows using soft-deletes. Virtual Private Database https://docs.oracle.com/database/122/DBSEG/using-oracle-vpd-to-control-data-access.htm In-Database Archiving https://docs.oracle.com/database/121/VLDBG/GUID-5A76B6CE-C96D-49EE-9A89-0A2CB993A933.htm#VLDBG14154 This video forms part of the Databases for Developers bootcamp. You can take this course by going to: https://devgym.oracle.com/devgym/database-for-developers.html Need help with SQL? Ask us over on AskTOM: https://asktom.oracle.com Twitter: https://twitter.com/ChrisRSaxon Daily SQL Twitter tips: https://twitter.com/SQLDaily All Things SQL blog: https://blogs.oracle.com/sql/ ============================ The Magic of SQL with Chris Saxon Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Views: 2980 The Magic of SQL
Dynamic SQL in SQL Server
 
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Text version of the video http://csharp-video-tutorials.blogspot.com/2017/03/dynamic-sql-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2017/03/dynamic-sql-in-sql-server_27.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All SQL Server Tutorial Videos https://www.youtube.com/playlist?list=PL08903FB7ACA1C2FB All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists In this video we will discuss 1. What is Dynamic SQL 2. Simple example of using Dynamic SQL What is Dynamic SQL Dynamic SQL is a SQL built from strings at runtime. Simple example of using Dynamic SQL Here is the SQL Script to create Employees table and populate it with data Create table Employees ( ID int primary key identity, FirstName nvarchar(50), LastName nvarchar(50), Gender nvarchar(50), Salary int ) Go Insert into Employees values ('Mark', 'Hastings', 'Male', 60000) Insert into Employees values ('Steve', 'Pound', 'Male', 45000) Insert into Employees values ('Ben', 'Hoskins', 'Male', 70000) Insert into Employees values ('Philip', 'Hastings', 'Male', 45000) Insert into Employees values ('Mary', 'Lambeth', 'Female', 30000) Insert into Employees values ('Valarie', 'Vikings', 'Female', 35000) Insert into Employees values ('John', 'Stanmore', 'Male', 80000) Go One way to achieve this is by implementing a stored procedure as shown below that this page would call. Create Procedure spSearchEmployees @FirstName nvarchar(100), @LastName nvarchar(100), @Gender nvarchar(50), @Salary int As Begin Select * from Employees where (FirstName = @FirstName OR @FirstName IS NULL) AND (LastName = @LastName OR @LastName IS NULL) AND (Gender = @Gender OR @Gender IS NULL) AND (Salary = @Salary OR @Salary IS NULL) End Go The stored procedure in this case is not very complicated as we have only 4 search filters. What if there are 20 or more such filters. This stored procedure can get complex. To make things worse what if we want to specify conditions like AND, OR etc between these search filters. The stored procedure can get extremely large, complicated and difficult to maintain. One way to reduce the complexity is by using dynamic SQL as show below. Depending on for which search filters the user has provided the values on the "Search Page", we build the WHERE clause dynamically at runtime, which can reduce complexity. However, you might hear arguments that dynamic sql is bad both in-terms of security and performance. This is true if the dynamic sql is not properly implemented. From a security standpoint, it may open doors for SQL injection attack and from a performance standpoint, the cached query plans may not be reused. If properly implemented, we will not have these problems with dynamic sql. In our upcoming videos, we will discuss good and bad dynamic sql implementations. For now let's implement a simple example that makes use of dynamic sql. In the example below we are assuming the user has supplied values only for FirstName and LastName search fields. To execute the dynamicl sql we are using system stored procedure sp_executesql. sp_executesql takes two pre-defined parameters and any number of user-defined parameters. @statement - The is the first parameter which is mandatory, and contains the SQL statements to execute @params - This is the second parameter and is optional. This is used to declare parameters specified in @statement The rest of the parameters are the parameters that you declared in @params, and you pass them as you pass parameters to a stored procedure Declare @sql nvarchar(1000) Declare @params nvarchar(1000) Set @sql = 'Select * from Employees where [email protected] and [email protected]' Set @params = '@FirstName nvarchar(100), @LastName nvarchar(100)' Execute sp_executesql @sql, @params, @FirstName='Ben',@LastName='Hoskins' This is just the introduction to dynamic SQL. If a few things are unclear at the moment, don't worry. In our upcoming videos we will discuss the following 1. Implementing a real world "Search Web Page" with and without dynamic SQL 2. Performance and Security implications of dynamic sql. Along the way we will also discuss good and bad dynamic sql implementations. 3. Different options available for executing dynamic sql and their implications 4. Using dynamic sql in stored procedures and it's implications Once we discuss all the above, you will understand 1. The flexibility dynamic sql provides 2. Advantages and disadvantages of dynamic sql 3. When and when not to use dynamic sql
Views: 37451 kudvenkat
Dynamic SQL in Stored Procedure
 
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In this video we will discuss, using dynamic sql in a stored procedure and it's implications from sql injection perspective. We will discuss performance implications of using dynamic sql in a stored procedure in a later video. Text version of the video http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-in-stored-procedure.html Slides http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-in-stored-procedure_11.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All SQL Server Tutorial Videos https://www.youtube.com/playlist?list=PL08903FB7ACA1C2FB All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists Consider the following stored procedure "spSearchEmployees". We implemented this procedure in Part 139 of SQL Server tutorial. This stored procedure does not have any dynamic sql in it. It is all static sql and is immune to sql injection. Create Procedure spSearchEmployees @FirstName nvarchar(100) = NULL, @LastName nvarchar(100) = NULL, @Gender nvarchar(50) = NULL, @Salary int = NULL As Begin Select * from Employees where (FirstName = @FirstName OR @FirstName IS NULL) AND (LastName = @LastName OR @LastName IS NULL) AND (Gender = @Gender OR @Gender IS NULL) AND (Salary = @Salary OR @Salary IS NULL) End Go Whether you are creating your dynamic sql queries in a client application like ASP.NET web application or in a stored procedure, you should never ever concatenate user input values. Instead you should be using parameters. Notice in the following example, we are creating dynamic sql queries by concatenating parameter values, instead of using parameterized queries. This stored procedure is prone to SQL injection. Let's prove this by creating a "Search Page" that calls this procedure. Create Procedure spSearchEmployeesBadDynamicSQL @FirstName nvarchar(100) = NULL, @LastName nvarchar(100) = NULL, @Gender nvarchar(50) = NULL, @Salary int = NULL As Begin Declare @sql nvarchar(max) Set @sql = 'Select * from Employees where 1 = 1' if(@FirstName is not null) Set @sql = @sql + ' and FirstName=''' + @FirstName + '''' if(@LastName is not null) Set @sql = @sql + ' and LastName=''' + @LastName + '''' if(@Gender is not null) Set @sql = @sql + ' and Gender=''' + @Gender + '''' if(@Salary is not null) Set @sql = @sql + ' and Salary=''' + @Salary + '''' Execute sp_executesql @sql End Go Add a Web Page to the project that we have been working with in our previous video. Name it "DynamicSQLInStoredProcedure.aspx". Copy and paste the HTML and code available on my blog at the following link http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-in-stored-procedure.html At this point, run the application and type the following text in the "Firsname" text and click "Search" button. Notice "SalesDB" database is dropped. Our application is prone to SQL injection as we have implemented dynamic sql in our stored procedure by concatenating strings instead of using parameters. ' Drop database SalesDB -- In the following stored procedure we have implemented dynamic sql by using parameters, so this is not prone to sql injecttion. This is an example for good dynamic sql implementation. Create Procedure spSearchEmployeesGoodDynamicSQL @FirstName nvarchar(100) = NULL, @LastName nvarchar(100) = NULL, @Gender nvarchar(50) = NULL, @Salary int = NULL As Begin Declare @sql nvarchar(max) Declare @sqlParams nvarchar(max) Set @sql = 'Select * from Employees where 1 = 1' if(@FirstName is not null) Set @sql = @sql + ' and [email protected]' if(@LastName is not null) Set @sql = @sql + ' and [email protected]' if(@Gender is not null) Set @sql = @sql + ' and [email protected]' if(@Salary is not null) Set @sql = @sql + ' and [email protected]' Execute sp_executesql @sql, N'@FN nvarchar(50), @LN nvarchar(50), @Gen nvarchar(50), @sal int', @[email protected], @[email protected], @[email protected], @[email protected] End Go On the code-behind page, use stored procedure spSearchEmployeesGoodDynamicSQL instead of spSearchEmployeesBadDynamicSQL. We do not have to change any other code. At this point run the application one more time and type the following text in the "Firstname" textbox and click the "Search" button. ' Drop database SalesDB -- Notice "SalesDB" database is not dropped, So in this case our application is not succeptible to SQL injection attack. Summary : Whether you are creating dynamic sql in a client application (like a web application) or in a stored procedure always use parameters instead of concatnating strings. Using parameters to create dynamic sql statements prevents sql injection.
Views: 29355 kudvenkat
Oracle Enterprise Manager: Always-On Monitoring
 
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The Enterprise Manager Always-On Monitoring application provides the ability to monitor critical target status and metric alerts when the Oracle Management Service is unavailable. The service continuously monitors critical targets through the Enterprise Manager Agent and can be easily configured to send email notifications for these events to administrators. See Enterprise manager online documentation for more information: http://docs.oracle.com/cd/E73210_01/EMADM/GUID-3152AD33-8118-4478-B888-A332CFAB3453.htm#EMADM15489 ================================= To improve the video quality, click the gear icon and set the Quality to 1080p/720p HD. For more information, see http://www.oracle.com/goto/oll Copyright © 2016 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Java Prepopulate Adapter to Autogenerate User ID - OIM 11.1.2.3
 
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Utilize a Java OIM Prepoulate Adapter to auto-generate a User ID by concatenating the first letter of the First Name attribute with the Last Name attribute then convert the result to upper case. This video tutorial is based on the OIM development environment deployed in previous tutorials. It also assumes knowledge of Linux and the Oracle modules involved in the build. For detailed information please visit http://idmgo.com To see the video playlist for the OIM 11.1.2.3 Development Environment build tutorials: https://www.youtube.com/playlist?list=PLkPO_JYGX0Yj2qz4eIU6v3Qek4IbQkXh_ For more information, refer to the guide for Developing and Customizing Applications for Oracle Identity Manager 11.1.2.3: https://docs.oracle.com/cd/E52734_01/oim/OMDEV/toc.htm
Views: 3379 IDMgo
GENERATE UUID JAVA
 
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GENERATE UUID JAVA A Job Portal http://www.InterviewDot.com http://www.InterviewDot.com http://www.InterviewDot.com One Click Dream Job - http://www.interviewdot.com/upload-resume/uploadresume.htm Are you looking for a new Job ? InterviewDot.com - A Job Portal http://www.InterviewDot.com http://www.InterviewDot.com http://www.InterviewDot.com One Click Dream Job - http://www.interviewdot.com/upload-resume/uploadresume.htm JAVA/SPRING/SQL/JUNIT INTERVIEW QUESTION AND ANSWER GENERATE UUID JAVA
Views: 3015 Interview Dot
How to generate primary keys with JPA and Hibernate
 
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Today, I will show you how to generate unique primary key values with JPA and Hibernate. But before we start, I want to know how you get the primary key values in your application? Do you use natural keys or UUIDs or do you generate technical IDs? Please post a comment below and tell me about it. I prefer to generate simple, numerical, technical IDs like you can see in the following code snippet instead of using natural keys which often require the combination of multiple attributes. Technical IDs are easier to manage and all involved systems, mainly the database and Hibernate, can index them very efficiently. This allows you to focus on the business logic of your application and avoids performance issues. If you like this video, please give me your thumbs up and share it with your friends and co-workers. Like my channel? Subscribe! ➜ http://bit.ly/2cUsid8 Join the free Member Library: https://goo.gl/dtyIIC Read the accompanying post: https://www.thoughts-on-java.org/jpa-generate-primary-keys/ Want to connect with me? Blog: http://www.thoughts-on-java.org/ Twitter: https://twitter.com/thjanssen123 Facebook: https://www.facebook.com/thoughtsonjava
Views: 3443 Thoughts On Java
2 Node Oracle 11gR2 RAC on laptop using Oracle VirtualBox
 
01:34:19
2 Node Oracle 11gR2 Real Application Cluster on laptop/desktop using Oracle VirtualBox and Linux as the Guest OS This is just a fast forward of a full configuration. You must be familiar with the installation process of Oracle Grid Infrastructure and the RAC concepts. This video is for those who want to practice Oracle RAC on laptop or desktop
Views: 14473 Satish Lodam
UUID GENERATE JAVA
 
01:39
UUID GENERATE JAVA A Job Portal http://www.InterviewDot.com http://www.InterviewDot.com http://www.InterviewDot.com One Click Dream Job - http://www.interviewdot.com/upload-resume/uploadresume.htm Are you looking for a new Job ? InterviewDot.com - A Job Portal http://www.InterviewDot.com http://www.InterviewDot.com http://www.InterviewDot.com One Click Dream Job - http://www.interviewdot.com/upload-resume/uploadresume.htm JAVA/SPRING/SQL/JUNIT INTERVIEW QUESTION AND ANSWER UUID GENERATE JAVA
Views: 656 Interview Dot
Difference between rows and range
 
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range vs rows in sql server difference between rows clause and range clause in sql server range clause vs rows clause in sql server sql server running total query running total example in sql server In this video we will discuss the difference between rows and range in SQL Server. This is continuation to Part 116. Please watch Part 116 from SQL Server tutorial before proceeding. Let us understand the difference with an example. We will use the following Employees table in this demo. SQL Script to create the Employees table Create Table Employees ( Id int primary key, Name nvarchar(50), Salary int ) Go Insert Into Employees Values (1, 'Mark', 1000) Insert Into Employees Values (2, 'John', 2000) Insert Into Employees Values (3, 'Pam', 3000) Insert Into Employees Values (4, 'Sara', 4000) Insert Into Employees Values (5, 'Todd', 5000) Go Calculate the running total of Salary and display it against every employee row The following query calculates the running total. We have not specified an explicit value for ROWS or RANGE clause. SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary) AS RunningTotal FROM Employees So the above query is using the default value which is RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW This means the above query can be re-written using an explicit value for ROWS or RANGE clause as shown below. SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal FROM Employees We can also achieve the same result, by replacing RANGE with ROWS SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal FROM Employees What is the difference between ROWS and RANGE To understand the difference we need some duplicate values for the Salary column in the Employees table. Execute the following UPDATE script to introduce duplicate values in the Salary column Update Employees set Salary = 1000 where Id = 2 Update Employees set Salary = 3000 where Id = 4 Go Now execute the following query. Notice that we get the running total as expected. SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal FROM Employees The following query uses RANGE instead of ROWS SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal FROM Employees Notice we don't get the running total as expected. So, the main difference between ROWS and RANGE is in the way duplicate rows are treated. ROWS treat duplicates as distinct values, where as RANGE treats them as a single entity. All together side by side. The following query shows how running total changes 1. When no value is specified for ROWS or RANGE clause 2. When RANGE clause is used explicitly with it's default value 3. When ROWS clause is used instead of RANGE clause SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary) AS [Default], SUM(Salary) OVER(ORDER BY Salary RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS [Range], SUM(Salary) OVER(ORDER BY Salary ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS [Rows] FROM Employees Text version of the video http://csharp-video-tutorials.blogspot.com/2015/10/difference-between-rows-and-range.html Slides http://csharp-video-tutorials.blogspot.com/2015/10/difference-between-rows-and-range_8.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 32817 kudvenkat
CTE in sql server   Part 49
 
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In this video we will learn about creating and referencing CTE's in SQL server. We will also learn how to create multiple CTE's using a single WITH clause. Text version of the video http://csharp-video-tutorials.blogspot.com/2012/09/common-table-expressions-part-49.html Slides http://csharp-video-tutorials.blogspot.com/2013/09/part-49-cte.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 176258 kudvenkat
NTILE function in SQL Server
 
05:10
In this video we will discuss NTILE function in SQL Server NTILE function 1. Introduced in SQL Server 2005 2. ORDER BY Clause is required 3. PARTITION BY clause is optional 4. Distributes the rows into a specified number of groups 5. If the number of rows is not divisible by number of groups, you may have groups of two different sizes. 6. Larger groups come before smaller groups For example NTILE(2) of 10 rows divides the rows in 2 Groups (5 in each group) NTILE(3) of 10 rows divides the rows in 3 Groups (4 in first group, 3 in 2nd & 3rd group) Syntax : NTILE (Number_of_Groups) OVER (ORDER BY Col1, Col2, ...) SQL Script to create Employees table Create Table Employees ( Id int primary key, Name nvarchar(50), Gender nvarchar(10), Salary int ) Go Insert Into Employees Values (1, 'Mark', 'Male', 5000) Insert Into Employees Values (2, 'John', 'Male', 4500) Insert Into Employees Values (3, 'Pam', 'Female', 5500) Insert Into Employees Values (4, 'Sara', 'Female', 4000) Insert Into Employees Values (5, 'Todd', 'Male', 3500) Insert Into Employees Values (6, 'Mary', 'Female', 5000) Insert Into Employees Values (7, 'Ben', 'Male', 6500) Insert Into Employees Values (8, 'Jodi', 'Female', 7000) Insert Into Employees Values (9, 'Tom', 'Male', 5500) Insert Into Employees Values (10, 'Ron', 'Male', 5000) Go NTILE function without PARTITION BY clause : Divides the 10 rows into 3 groups. 4 rows in first group, 3 rows in the 2nd & 3rd group. SELECT Name, Gender, Salary, NTILE(3) OVER (ORDER BY Salary) AS [Ntile] FROM Employees What if the specified number of groups is GREATER THAN the number of rows NTILE function will try to create as many groups as possible with one row in each group. With 10 rows in the table, NTILE(11) will create 10 groups with 1 row in each group. SELECT Name, Gender, Salary, NTILE(11) OVER (ORDER BY Salary) AS [Ntile] FROM Employees NTILE function with PARTITION BY clause : When the data is partitioned, NTILE function creates the specified number of groups with in each partition. The following query partitions the data into 2 partitions (Male & Female). NTILE(3) creates 3 groups in each of the partitions. SELECT Name, Gender, Salary, NTILE(3) OVER (PARTITION BY GENDER ORDER BY Salary) AS [Ntile] FROM Employees Link for all dot net and sql server video tutorial playlists https://www.youtube.com/user/kudvenkat/playlists?sort=dd&view=1 Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2015/10/ntile-function-in-sql-server.html
Views: 36582 kudvenkat
BREAKING!!! HOT!!! MATRIX ORACLE PORTFOLIO. WEBSITE OFFICIALLY FINISHED!!! BITCOIN, CRYPTO!!!
 
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We need all the support we can get. It's absolutely free to join our telegram chat room. Anything related to blockchain technology cryptocurrency Bitcoin Ripple Litecoin. Over 1,500 Cryptos, Must have a telegram account. Free to create. Here is the link to our Telegram. @theestablishment Also here is the link to Matrix Oracle portfolio website. https://www.matrixoracleportfolio.com/ And last but not least here is the new YouTube channel for the Matrix Oracle portfolio. As well as an explanation of the golden ratio technology... https://youtu.be/Ftw-60rGFQw
Views: 737 Matrix Portfolio
Monitoring  Oracle Java Cloud Service -  SaaS Extension
 
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(This video is describes how to use JCS-SaaS Extension Control, the Java console for JCS-SaaS Extension, to monitor activity running on that application. For additional information, see "Using Oracle Java Cloud Service - SaaS Extension Control" at https://docs.oracle.com/cloud/latest/javacs_gs/CSJSU/GUID-DB8FC210-671F-470C-94A9-C472814C8E66.htm#CSJSU7074 NOTE: To improve the video quality, click the gear icon and set the Quality to 1080p/720p HD. ================================= For more information, see http://www.oracle.com/goto/oll Copyright © 2016 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Changing the UUID of a Virtualbox Hard Drive (VDI) using VBoxManage Sethduuid
 
02:42
In this video I change the Universal Unique Identifier (UUID) of a copied Virtualbox hard drive (vdi) using the VboxManage command line utility tool. In order to reuse an existing hard drive in Virtualbox you will need to have a different UUID for every hard drive associated with VirtualBox. If you simply make a copy of a hard drive without using the CloneHD utility of Virtualbox you will need to change the UUID of your copied VDI. The command is in the format VBoxManage internalcommands sethduuid harddrive.vdi. For more information visit http://lecturesnippets.com
Views: 18950 Lecture Snippets
SQL Plus 18c rocks!
 
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It's only March, but Christmas just came (very) early for SQL Plus users blog: https://connor-mcdonald.com music: Kevin McLeod, incomptech.com New features for SQL Plus 18c here: https://docs.oracle.com/en/database/oracle/oracle-database/18/sqprn/index.html#SQPRN-GUID-B336CE0F-EC31-4993-A34C-733E335046BC
Views: 770 Connor McDonald
Sequence object in SQL Server 2012
 
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create sequence in sql server In this video we will discuss sequence object in SQL Server. Sequence object Introduced in SQL Server 2012 Generates sequence of numeric values in an ascending or descending order Text version of the video http://csharp-video-tutorials.blogspot.com/2015/10/sequence-object-in-sql-server-2012.html Slides http://csharp-video-tutorials.blogspot.com/2015/10/sequence-object-in-sql-server-2012_26.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists Creating the Incrementing Sequence : The following code create a Sequence object that starts with 1 and increments by 1 CREATE SEQUENCE [dbo].[SequenceObject] AS INT START WITH 1 INCREMENT BY 1 Generating the Next Sequence Value : Now we have a sequence object created. To generate the sequence value use NEXT VALUE FOR clause SELECT NEXT VALUE FOR [dbo].[SequenceObject] Output : 1 Every time you execute the above query the sequence value will be incremented by 1. I executed the above query 5 times, so the current sequence value is 5. Retrieving the current sequence value : If you want to see what the current Sequence value before generating the next, use sys.sequences SELECT * FROM sys.sequences WHERE name = 'SequenceObject' Alter the Sequence object to reset the sequence value : ALTER SEQUENCE [SequenceObject] RESTART WITH 1 Select the next sequence value to make sure the value starts from 1 SELECT NEXT VALUE FOR [dbo].[SequenceObject] Using sequence value in an INSERT query : CREATE TABLE Employees ( Id INT PRIMARY KEY, Name NVARCHAR(50), Gender NVARCHAR(10) ) -- Generate and insert Sequence values INSERT INTO Employees VALUES (NEXT VALUE for [dbo].[SequenceObject], 'Ben', 'Male') INSERT INTO Employees VALUES (NEXT VALUE for [dbo].[SequenceObject], 'Sara', 'Female') -- Select the data from the table SELECT * FROM Employees Creating the decrementing Sequence : The following code create a Sequence object that starts with 100 and decrements by 1 CREATE SEQUENCE [dbo].[SequenceObject] AS INT START WITH 100 INCREMENT BY -1 Specifying MIN and MAX values for the sequence : Use the MINVALUE and MAXVALUE arguments to specify the MIN and MAX values respectively. Step 1 : Create the Sequence object CREATE SEQUENCE [dbo].[SequenceObject] START WITH 100 INCREMENT BY 10 MINVALUE 100 MAXVALUE 150 Step 2 : Retrieve the next sequence value. The sequence value starts at 100. Every time we call NEXT VALUE, the value will be incremented by 10. SELECT NEXT VALUE FOR [dbo].[SequenceObject] If you call NEXT VALUE, when the value reaches 150 (MAXVALUE), you will get the following error The sequence object 'SequenceObject' has reached its minimum or maximum value. Restart the sequence object to allow new values to be generated. Recycling Sequence values : When the sequence object has reached it's maximum value, and if you want to restart from the minimum value, set CYCLE option ALTER SEQUENCE [dbo].[SequenceObject] INCREMENT BY 10 MINVALUE 100 MAXVALUE 150 CYCLE At this point, whe the sequence object has reached it's maximum value, and if you ask for the NEXT VALUE, sequence object starts from the minimum value again which in this case is 100. To improve performance, the Sequence object values can be cached using the CACHE option. When the values are cached they are read from the memory instead of from the disk, which improves the performance. When the cache option is specified you can also specify the size of th cache , that is the number of values to cache. The following example, creates the sequence object with 10 values cached. When the 11th value is requested, the next 10 values will be cached again. CREATE SEQUENCE [dbo].[SequenceObject] START WITH 1 INCREMENT BY 1 CACHE 10 Using SQL Server Graphical User Interface (GUI) to create the sequence object : 1. Expand the database folder 2. Expand Programmability folder 3. Right click on Sequences folder 4. Select New Sequence Next video : Difference between SEQUENCE and IDENTITY in SQL Server
Views: 33969 kudvenkat
UniqueIdentifier, Guid, Newid, NewSequentialid in SQL Server Tamil
 
07:56
Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg Uniqueidentifiers are also referred to as GUIDs. (Globally Unique IDentifier). That is, the API call that returns a GUID is guaranteed to always return a unique value across space and time. Its related to MAC address based On network card and the system time. The uniqueidentifier data type in SQL Server is stored natively as a 16-byte binary value. We can get a Guid from NewID() or NewSequentialID() NEWID() - randomly generates a guaranteed unique value based on the identification number of the server's network card plus a unique number from the CPU clock. We can use this in Insert, Select Statement. NEWSEQUENTIALID() - generates these values in sequential order as opposed to randomly. We can use this in Create Statement default value and We can’t use in Insert, Select Statement The major advantage of using GUIDs is that they are unique across all space and time. This comes in handy if you're consolidating records from multiple SQL Servers into one table, as in a data warehousing situation. GUIDs are also used heavily by SQL Server replication to keep track of rows when they're spread out among multiple SQL Servers The main disadvantage to using GUIDs as key values is that they are BIG. At 16 bytes a pop, they are one of the largest datatypes in SQL Server. Indexes built on GUIDs are going to be larger and slower than indexes built on IDENTITY columns, which are usually ints (4 bytes) Explained in Tamil
Views: 186 IT Port
How To Create A Customer in Oracle ERP Cloud Accounts Receivable
 
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How To Create A Customer in Oracle ERP Cloud Accounts Receivable
Views: 4467 Inoapps Limited
Omnichannel Services - Use UUID Keys to Your Data
 
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Christian Forsberg is the Global Digital Channels Lead Architect at Sogeti building digital solutions for organizations around the world. "-Today I'm going to talk to you about why it's important to use universally unique identifiers (UUID) as keys to your data, and I will show you some of the problems that they can solve. In the distributed computing world of mobile devices and an internet of things it becomes almost impossible to have one source for key generation, so each device need to be able to create their own keys, while still making sure that those keys are unique. The answer is to use UUIDs, which is a standard by the Open Software Foundation, and there's an industry wide support for them. For example, PHP, Java, .NET, Oracle, and MySQL all have ways to generate them, and SQL Server and ProgresSQL even has native UUID data types. Let talk about the benefits of using UUIDs, and I will start by pointing out some of the problems they can solve. When doing our data models, we have been taught to normalize our databases so that we find primary keys as one of the columns or a combination of columns. If not found, we usually add a generated id, such as an automatically incremented integer. One problem with using a multi-column key is that the queries become more complex as each column needs to be included in each join, and more complex means a lower performance and also larger indices. Another problem is that it's harder for the consumer of the data to know which columns are included in the key. With auto-generated keys, we get a simpler join, but a problem is that each consumer need to ask the generator for a valid key, and another problem is that there will be "holes" in the sequence when rows are deleted. Yet another problem is that any data type used has a fixed limit (even if huge), so it will eventually run out. Also, it becomes tricky for a client to find out which id was generated during an insert. With UUIDs, we get the same benefit of the simpler join as we got with the auto-generated keys, but now each user of the data can generate new keys and rows, without access to any central key generator -- it can even happen while disconnected. So any device or thing can generate a key and the maximum 3.4 x 10^38 combinations both ensure that each key is unique and that there's no practical limit of keys. But even UUIDs have drawbacks, and the most obvious is that they are hard to remember. Therefore, it's a good practice to provide ways of accessing data using attributes that are easier to remember. For example, provide a service that can get an order by providing an order number in addition to getting it using the primary key, the UUID. So make sure that you use UUIDs as keys to your data to allow distributed key generation, simplified joins, and get better performance." Follow Christian on Twitter https://twitter.com/chrisforsberg Visit Christian's site http://cforsberg.com
Views: 1503 Sogeti Worldwide
Hibernate 5 Tutorial - UUID and Custom Id Generation
 
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In this video, I will demo how to makeUUID and Custom Id Generation. ====================================================== You can see programming languages book reviews and buy Books Online at http://learningprogramming.net/ ====================================================== You also can buy my apps in http://codecanyon.net/user/octopuscodes/portfolio ====================================================== TODAY IS A GREAT DAY TO LEARN SOMETHING NEW! ====================================================== Learning Programming videos help teach you about programming languages:Joomla, wordpress, drupal, magento, html template, free admin template, free bootstrap admin templates, SilverStripe, Cake PHP, CodeIgniter, Concrete5, Modx, ExpressionEngine, Alfresco,TYPOlight, laravel, magento, angularjs, node.js, html, css, javascript, jquery, java, .net, wamp server, xampp, php, mysql, sql server, oracle, open sources, android, hibernate, jpa, html5, jquery
Views: 1278 Learning Programming
LINUX: Mount USB drives to permanent locations with UUID, fstab and udev
 
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More videos like this on http://www.theurbanpenguin.com : In this tutorial we mount a USB dive to a fixed location using the file-system's UUID mounted in /etc/fstab. To make sure that the fstab is read for new hardware being detected, ie the usb drive being inserted, we create a udev rule to cater for this.
Views: 14824 theurbanpenguin
asp net oracle
 
14:41
Views: 119 Nguyennhat Son
Prevent sql injection with dynamic sql
 
10:28
Text version of the video http://csharp-video-tutorials.blogspot.com/2017/04/prevent-sql-injection-with-dynamic-sql.html Slides http://csharp-video-tutorials.blogspot.com/2017/04/prevent-sql-injection-with-dynamic-sql_5.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All SQL Server Tutorial Videos https://www.youtube.com/playlist?list=PL08903FB7ACA1C2FB All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists In this video we will discuss, how to prevent SQL injection when using dynamic SQL. In Part 140, we have implemented "Search Page" using dynamic SQL. Since we have used parameters to build our dynamic SQL statements, it is not prone to SQL Injection attack. This is an example of good dynamic SQL implementation. I have seen lot of software developers, not just the beginners but even experienced developers, buidling their dynamic sql queries by concatenating strings instead of using parameters without realizing that they are opening the doors for SQL Injection. Please check my blog at the following link for code used in the demo. http://csharp-video-tutorials.blogspot.com/2017/04/prevent-sql-injection-with-dynamic-sql.html Since we are concatenating the user input values to build the dynamic sql statement, the end user can very easily inject sql. Imagine, what happens for example, if the user enters the following in the "Firstname" textbox. ' Drop database SalesDB -- With the above SQL injected into the "Firstname" textbox, if you click the "Search" button, the following is the query which is sent to SQL server. This will drop the SalesDB. Select * from Employees where 1 = 1 AND FirstName = '' Drop database SalesDB --' On the other hand, if you use parameters to build your dynamic SQL statements, SQL Injection is not an issue. The following input in the "Firstname" textbox, would not drop the SalesDB database. ' Drop database SalesDB -- The text the user has provided in the "Firstname" textbox is treated as the value for @Firstname parameter. The following is the query that is generated and executed. exec sp_executesql N'Select * from Employees where 1 = 1 AND [email protected]',N'@FirstName nvarchar(26)',@FirstName=N''' Drop database SalesDB --' We don't have this problem of sql injection if we are using stored procedures. "SearchPageWithoutDynamicSQL.aspx" is using the stored procedure "spSearchEmployees" instead of dynamic SQL. The same input in the "Firstname" texbox on this page, would generate the following. Notice, whatever text we typed in the "Firstname" textbox is treated as the value for @FirstName parameter. exec spSearchEmployees @FirstName=N''' Drop database SalesDB --' An important point to keep in mind here is that if you have dynamic SQL in your stored procedure, and you are concatenating strings in that stored procedure to build your dynamic sql statements instead of using parameters, it is still prone to SQL injection. If this is not clear at the moment don't worry, we will discuss an example of this in out next video. So in summary, while dynamic sql provides great flexibility when implementing complicated logic with lot of permutations and combinations, if not properly implemented it may open doors for sql injection. Always use parameters to build dynamic sql statements, instead of concatenating user input values. Another benefit of using parameters to build dynamic sql statements is that it allows cached query plans to be reused, which greatly increases the performance. We will discuss an example of this in our upcoming videos.
Views: 18182 kudvenkat
10 - web services. Генерация классов
 
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Лектор: Тимур Батыршинов (http://javabegin.ru). Ссылки из урока: Пример использования xjc: http://www.xyzws.com/scdjws/studyguide/jaxb_samples2.0.html http://docs.oracle.com/javase/6/docs/technotes/tools/share/xjc.html Домашнее задание: Сравнить реализации Java классов из прошлого урока Просмотреть документацию для ручного создания Java классов на основе XSD Создать Java классы на основе xml Добавить тег UUID к каждому person Почитать про класс UUID http://docs.oracle.com/javase/7/docs/api/java/util/UUID.html Сохранить новый xml
Views: 2169 Roman Brovko
Virtualbox error - Failed to create the hard disk storage, with UUID already exists
 
01:44
When trying to create a virtualbox (ubuntu), i get an error : -- Failed to create the hard disk storage /home/user/VirtualBox VMs/Ubuntu64bit.vdi Cannot register the hard disk '/home/duaz/VirtualBox VMs/Ubuntu64bit/Ubuntu64bit.vdi' {fb7edfb4-d1c7-41de-9e1d-e483f4663fed} because a hard disk '/home/duaz/VirtualBox VMs/Ubuntu64bit/Ubuntu64bit.vdi' with UUID {1ac61938-0ee5-428b-a29e-1c252dcdcbd4} already exists. -- See this video how to fix that.
Views: 6106 Ambar Hasbiyatmoko
How to Fix VirtualBox “UUID already exists”
 
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It is a simple solution for some of you big problem. Just do as I and no error anymore ################## Buy my course: IOT based Raspberry Temperature monitoring with Email Alert on udemy https://www.udemy.com/course/481118 ##################
Views: 2389 Mix tutor
DataGrip Introduction
 
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IMPORTANT! If you're looking for DataGrip Quick Start Guide, please, read: https://www.jetbrains.com/datagrip/quick-start/ DataGrip is an IDE from JetBrains built for database developers. It allows you to quickly migrate and refactor relational databases, construct efficient, statically checked SQL queries and much more. In this video, we highlight some of DataGrip's most powerful features. It is also relevant to the database plugin of IntelliJ IDEA, PhpStorm, PyCharm and RubyMine. For more details visit https://www.jetbrains.com/datagrip.
Views: 41120 JetBrainsTV
FIX "Failed to create VirtualBox COM Object Error"
 
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STEPS ====== 1. First, uninstall any previous version of Virtual Box 2. Go to C:\Users\YOUR_USER_NAME 3. Look for ".VirtualBox" & "VirtualBox.sav" and delete them 4. Now, install Virtual Box CONNECT WITH US =============== Susbcribe Us : http://bit.ly/1bMRgju Twitter : http://bit.ly/IdDIqm Google+ : http://bit.ly/19TBCS4 Additional Tags ============ Fix Failed to Create VirtualBox COM Object Error Error Code CO_E_SERVER_EXEC_FAILURE (0x80080005) Failed to create VirtualBox COM object Callee RC: 0x80470007 Failed to create the VirtualBox object! VBoxManage.exe: error: Code CO_E_SERVER_EXEC_FAILURE (0x80080005) Orcale VM Virtual Box fatal error Oracle VM Virtual Box Windows 7 Failed to created VirtualBox object." Error code was NS_ERROR_FACTORY_NOT_REGISTERED
Views: 55228 Best PC Tutorials
Fix Virtual Box Not Starting :Failed To Create Virtual box Com Object Error
 
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This tutorial will help you to resolve Virtual Box Failed to Create Object Error on Linux/windows machine
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