Questions
Single choice
In RDBMS, what is a primary key?
Options
A.A key that uniquely identifies each record in a table
B.A key that establishes a relationship between tables
C.A key that restricts access to data
D.None of the above
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Step-by-Step Analysis
In this question about primary keys in an RDBMS, we start by examining what a primary key is intended to do.
Option 1: 'A key that uniquely identifies each record in a table' accurately captures the core purpose of a primary key. It enforces ent......Login to view full explanationLog in for full answers
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