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8 October, 10:31

What is a primary key? In computer bussiness

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  1. 8 October, 11:17
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    It used in a relation database like SQL as a unique identifier for a table in the database. Example school database has a students table which contains a { student_pk, name, gpa} columns with student_pk/student_id being the primary key that other tables can reference the table by.
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