How to create foreign key relationship in sql server 2008

SQL FOREIGN KEY Constraint

how to create foreign key relationship in sql server 2008

Jan 27, In this post, I am going to show you, how to add a Foreign Key to a table Net technologies, it is very easy to handle your SQL data base using then select the attribute which needed to be set as foreign key. sql_FK1. Step 2. Right click and get the menu, then select the “Relationships” from the menu. Jul 2, Dr. Soper shows how to create simple and composite primary keys and foreign key relationships in a SQL Server database using SQL Server. May 25, A foreign key is a type of constraint, and so if you want to create a foreign key in SQL Server, you'll need to create a foreign key constraint.

How to create a SQL Server foreign key

A table can reference a maximum of other tables and columns as foreign keys outgoing references. SQL Server Requires at least compatibility level. The increase has the following restrictions: MERGE operations are not supported. A table with a foreign key reference to itself is still limited to foreign key references.

how to create foreign key relationship in sql server 2008

Greater than foreign key references are not currently available for columnstore indexes, memory-optimized tables, or Stretch Database. If a foreign key is defined on a CLR user-defined type column, the implementation of the type must support binary ordering. The table opens in Table Designer. From the Table Designer menu, click Relationships. In the Foreign-key Relationships dialog box, click Add.

how to create foreign key relationship in sql server 2008

Click the relationship in the Selected Relationship list. Click Tables and Columns Specification in the grid to the right and click the ellipses In the Tables and Columns dialog box, in the Primary Key drop-down list, choose the table that will be on the primary-key side of the relationship.

How do I create a foreign key in SQL Server? - Stack Overflow

To help with understanding the relationships, ProductCategory will be the referenced table and Product will be the referencing table. When creating a Foreign Key there are a few options to enforce rules when changes are made to the referenced table: Delete Rule - this determines what happens if the record is deleted in the referenced table. Update Rule - this determines what happens if the row key is updated in the referenced table.

Create two tables with relationships in SQL Server Management Studio

The options for the Delete and Update rules are: If not, the change is rolled back. This value would also need to exist in the referenced table.

How to create a SQL Server foreign key

If the value does not exist in the referenced table, the change would be rolled back. The table designer will open as well as a new window like below.

how to create foreign key relationship in sql server 2008

Click on the ellipse Another window will open like below. We can change the Relationship Name Foreign Key name and also need to select the appropriate tables and columns. On the right, the referencing table Product is already selected, but underneath we need to select the column ProductCategoryID.

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