Computer Science
Assertion. A unique value that identifies each row uniquely is the primary key.
Reason. Only one column can be made the primary key.
Relational Database
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Answer
(c)
Assertion is true but Reason is false.
Explanation
A primary key is a set of one or more attributes (columns) that can uniquely identify tuples within the relation. When a primary key is made up of two or more attributes, it is called as composite primary key. Hence, the reason is false.
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