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what is the difference between primary key & foreign key?
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Answer Posted / gaurav , ashish ,preeti , main
Primary key is used to identify a row in a table and it
doesnot allow null values. It avoids duplication of rows.
whereas foreign key refers to a column or combination of
columns included in the defenition of referential integrity
| Is This Answer Correct ? | 57 Yes | 16 No |
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