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Is duplicate entry of other attributes are allowed in SQL?

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Is duplicate entry of other attributes are allowed in SQL?

(a) Yes

(b) No

(c) Depends

(d) None of the mentioned

The question was asked in my homework.

This interesting question is from When Good Statements Go Bad topic in division Query Optimization of MySQL

1 Answer

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Best answer
Right answer is (a) Yes

Easiest explanation: Duplicate values are allowed but not for Primary Key attributes.

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