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Deferrable Initially Deffered- Oracleadda.com
 
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Deferrable keyword in SQL. This is used where we need to invalidate referential integrity between two tables while inserting the data. By using this keyword, the integrity check can be made at the time of committing the transaction. Please visit : www.oracleadda.com and post any queries related to Oracle. Will reply you back at earliest. Thank You
Views: 1613 Oracleadda
Initially Deferred Constraint | Deferrable Constraint in Oracle | Deferred Constraints Oracle
 
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Initially deferred constraints are required in special situations where the constraint checking is required to be delayed until the commit.Deferrable constraint in Oracle has been demonstrated here. The video contains example on deferred constraint using the case of storing the data of two employees in relationship as husband and spouse #IntegrityConstraints #LearnSQL #Crazy4DB #SQLBasics #MunshiSir #DBMSBasics #BasicSQL #Constraints Interview Questions : (1) What is the normal mode of data integrity checking? What does it mean? (2) What are the two options for delaying the integrity verification of the data to the transaction level? DBMS Keys Tutorial : https://youtu.be/DLrCop3-I2M Integrity Constraint Part 1 Video : https://youtu.be/MaZIN_MVFY8 Integrity Constraint Part 2 Video : https://youtu.be/dLzuFmFiHxk Integrity Constraint Part 3 Video : https://youtu.be/l6C-gmIaswA My web site : http://www.oracletrainingnagpur.com My blog : https://crazy4db.blogspot.in My facebook page : https://www.facebook.com/crazy4db/
Views: 46 Crazy4 DB
Oracle Tutorial || Oracle| Sql Constraints Part - 1 by basha
 
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Using DEFERRED Constraints in Oracle/ arabic
 
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Using DEFERRED Constraints in Oracle/ arabic maxvlearn.com
Views: 384 khaled alkhudari
087-Oracle SQL 12c: DEFERRABLE Constraints/ هاي حلوه
 
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تعلم اوراكل حتى الاحتراف تعلم اوراكل من الصفر EXAM 1Z0-061 EXAM 1Z0-071
Views: 1323 khaled alkhudari
44. Unique Constraint in Oracle
 
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In this video you will learn about Unique Constraint in Oracle. The UNIQUE constraint uniquely identifies each record in a database table. The UNIQUE and PRIMARY KEY constraints both provide a guarantee for uniqueness for a column or set of columns. A PRIMARY KEY constraint automatically has a UNIQUE constraint defined on it. Note that you can have many UNIQUE constraints per table, but only one PRIMARY KEY constraint per table. For Support =========== Email: [email protected]rninhindi.com Contact Form: http://www.learninhindi.com/home/contact Our Social Media ================ Facebook: https://www.facebook.com/LearnInHindi Twitter: https://twitter.com/LearnInHindi For Training & Videos ===================== For more videos and articles visit: http://www.learninhindi.com Free Java Programming In Hindi Course ===================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAwwhMyoLISrxkXTADGp7PH Free Oracle PL/SQL Programming In Hindi Course ============================================== https://www.youtube.com/playlist?list=PLB5DA82419C2D99B6 Free C Programming In Hindi Course ================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAxKpBLMWogxSdy6BZcsAJq Trips & Tricks Channel ====================== https://www.youtube.com/channel/UCGmLfkuCo-3lHHJXRJ9HUMw Programming in Hindi Channel ============================ https://www.youtube.com/channel/UCudElIDgwNrybeAvXIy1HZQ
Views: 15365 ITORIAN
Pseudo columns in Oracle - Rowid vs rownum in Oracle - Sysdate function in SQL
 
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Pseudo columns in oracle play an important role in providing some information from the system like rowid, rownum, sysdate and user account. The difference between rowid vs rownum has been explained with examples in this video. Sysdate function returns the current system date as on the serve while user pseudo column returns the name of the current user. #LearnSQL #OracleSQL #Crazy4DB #MunshiSir #PseudoColumns #BasicSQL Types of Subqueries : https://youtu.be/a69CaAru1aU Relational Algebra : https://youtu.be/wNaX1a5Kc48 A complete course on SQL : https://www.youtube.com/playlist?list=PLdNnjIwbbBta7tveno_un-C7VVFY-F24Z My web site : http://www.oracletrainingnagpur.com My blog : https://crazy4db.blogspot.in My facebook page : https://www.facebook.com/crazy4db/
Views: 51 Crazy4 DB
SQL Server Constraint Operations
 
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Microsoft SQL Server Constraint Operations. Kompozit TV ! Kompozit Studios
Views: 38 Kompozit Tv
Lecture - 13 Constraints and Triggers
 
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Lecture Series on Database Management System by Dr.S.Srinath, IIIT Bangalore. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 49489 nptelhrd
Part 4   Customizing table, column and foreign key column names when using entity framework code fir
 
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Text version of the video http://csharp-video-tutorials.blogspot.com/2014/05/part-4-customizing-table-column-and.html Slides http://csharp-video-tutorials.blogspot.com/2014/05/part-4-customizing-table-column-and_7.html Entity Framework - All Text Articles http://csharp-video-tutorials.blogspot.com/2014/05/entity-framework-tutorial.html Entity Framework - All Slides http://csharp-video-tutorials.blogspot.com/2014/05/entity-framework-tutorial-slides.html Entity Framework Playlist https://www.youtube.com/playlist?list=PL6n9fhu94yhUPBSX-E2aJCnCR3-_6zBZx Dot Net, SQL, Angular, JavaScript, jQuery and Bootstrap complete courses https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd In this vide we will discuss, customizing table, column and foreign key column names when using entity framework code first approach. This is continuation to Part 3. Please watch Part 3 before proceeding. In Part 3, we have discussed generating Departments and Employees tables using Entity Framework Code first approach. Entity Framework generated the Employees table. Notice the column names. Department_Id column has an underscore in it's name. Let's say we want the column to be generated as DepartmenId (without an underscore) Entity Framework generated the above Employees table based on the following custom Employee class that we created. public class Employee { public int Id { get; set; } public string FirstName { get; set; } public string LastName { get; set; } public string Gender { get; set; } public int Salary { get; set; } public Department Department { get; set; } } To achieve this use the ForeignKey attribute present in System.ComponentModel.DataAnnotations.Schema namespace. Modify the Employee class as shown below. public class Employee { public int Id { get; set; } public string FirstName { get; set; } public string LastName { get; set; } public string Gender { get; set; } public int Salary { get; set; } public int DepartmentId { get; set; } [ForeignKey("DepartmentId")] public Department Department { get; set; } } Rebuild the solution, and run the application. You may get the following error. We will discuss the reasons for this error and how to fix it the right way in a later video session. The model backing the 'EmployeeDBContext' context has changed since the database was created. Consider using Code First Migrations to update the database (http://go.microsoft.com/fwlink/?LinkId=238269). For now to get around the error, delete the Sample database using SQL Server Management Studio, and then try to run the application again. A blank webform will be displayed. Now check the Employees tables using SQL Server Management Studio and notice that the DepartmentId column is created without an underscore as expected. To customize the table name, use Table attribute and to customize column name use Column attribute. For example, to change Table name from Employees to tblEmployees and FirstName column to First_Name We would modify the Employee class as shown below. [Table("tblEmployees")] public class Employee { public int Id { get; set; } [Column("First_Name")] public string FirstName { get; set; } public string LastName { get; set; } public string Gender { get; set; } public int Salary { get; set; } public int DepartmentId { get; set; } [ForeignKey("DepartmentId")] public Department Department { get; set; } }
Views: 135987 kudvenkat