What is an identifier

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(1) What is an "identifier" (primary key)?

(2) What would be a good identifier for STUDENT table (=entity) for a university.

(3) What would be a good identifier for facebook USER entity?

Reference no: EM13269991

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What is an identifier : What is an "identifier" (primary key)? What would be a good identifier for STUDENT table (=entity) for a university. What would be a good identifier for facebook USER entity?
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