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what is meant by Foreign key and referential integrity

 
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rudresh

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Joined: 18 Sep 2006
Posts: 6

PostPosted: Fri May 25, 2007 10:21 am    Post subject: what is meant by Foreign key and referential integrity
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i was asked in interview.what is meant by foreign key and what is meantby referential integrity and why we are using this ?

iam not clear about this .so please give me clear idea about this.
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Devzee

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Joined: 20 Jan 2007
Posts: 684
Location: Hollywood

PostPosted: Fri May 25, 2007 10:45 am    Post subject:
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Read RDBMS concepts and definitely you will understand what is Referential Integrity Constraint and Foriegn Key.
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