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 ...

This program segment deletes integrity constraints using PROC SQL. proc sql; alter table salary DROP CONSTRAINT for_key; alter table people DROP CONSTRAINT gender DROP CONSTRAINT _nm0001_ DROP ...

Check constraints in SQL help keep data accurate by allowing only the right kind of information in a column. They make sure the data follows the rules, making databases easier to read and more secure.

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ETL scripts of apple . Contribute to Jashwanthjampala1998/ETL development by creating an account on GitHub.

Viewing all foreign key constraints in SQL Server 27 November, 2008. It was a Thursday. This one goes in the “so I never have to look again” category. I needed to get a list of all foreign keys in the ...

When I am working with an Oracle database, I still find myself using SQL*Plus for many quick and dirty database queries. In particular, I often look up constraints in SQL*Plus. In this post, I ...