what is composite key and use

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what is composite key? when we are going to use

Posted 13-Jun-14 2:47am

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OriginalGriff · Answer 1 · 2014-06-13T02:55:00

Google is your friend: Be nice and visit him often. He can answer questions a lot more quickly than posting them here...

A very quick search using your subject as the search term gave 182 million hits: https://www.google.co.uk/search?q=composite+key&oq=composite+key&aqs=chrome..69i57&sourceid=chrome&es_sm=93&ie=UTF-8[^]

Of which, the second and third are pretty concise and accurate:
http://www.sqa.org.uk/e-learning/MDBS01CD/page_19.htm[^]
http://www.techopedia.com/definition/6572/composite-key[^]

In future, please try to do at least basic research yourself, and not waste your time or ours.

Manikandan10 · Answer 2 · 2014-06-13T03:07:00

Start from here here, here or here.

A small demo:
http://lmgtfy.com/?q=Composite+keys+[^]

Posted 13-Jun-14 3:07am