A fifth best practice for naming primary keys and foreign keys is to avoid using reserved words or symbols that have special meanings or functions in SQL or your database system.

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Foreign key is used to establish a link between two tables . it always define in reference of primary key ( another table ) . it act as a primary key in its own table and foreign key for another table ...

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The difference between a composite key, a foreign key and a primary key is a good illustration of the complex and byzantine nature of relational database standards that make database administration an ...

By using cascading referential integrity constraints, you can define the actions that SQL Server 2005 takes when a user tries to delete or update a key to which existing foreign keys point. Skip ...