Hello Nivedita, I am not satisfied with ur answer the difference betwee

What is the main different between Null and NOT Null.
Difference between Primary and Unique Key.
How to Check the database from which application is it
possibe.

Question Posted / sunil kumar

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Answer Posted / sunil kumar

Hello Nivedita,
I am not satisfied with ur answer the difference between
primary key and foreign key.I think the answer is reverse.

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