The term "data integrity" can mean different things to different people, but the most difficult and pervasive problem facing organizations these days is the semantic integrity of the data. As ...

The CHECK constraint limits the value range that can be placed in a column. It ensures only specific values are accepted either on a single column or based on conditions across multiple columns.

(4,"barani","dharan",10.90,"2003-12-16");#THIS WILL WORK BECAUSE THE constraint hourly_pay satisfies the condition ...

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 look at ...

I think the logic is too complicated for a CHECK constraint, and I haven't managed to get a user-defined function to work it that context so it may not be possible that way.