Question

Explain the primary key with an Example​

Answer 1

Answer:

A primary key is either an existing table column or a column that is specifically generated by the database according to a defined sequence. For example, students are routinely assigned unique identification (ID) numbers, and all adults receive government-assigned and uniquely-identifiable Social Security numbers.

Explanation:

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Answer 2

Answer:

primary key is either an existing table column Ora column that is specifically generated by the database base according to a define sequence. for example, students are routinely assigned unique identification numbers, and and all adults receive government-assign and uniquely identifiable social security number.