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Question
An attribute that uniquely identifies the rows of a table is known as the _____ key
An attribute that uniquely identifies the rows of a table is known as the _____ key
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Solution
The correct option is D primary
A table has specified number of columns, but can have any number of rows. Each row is identified by one or more values appearing in a particular column subset. A specific choice of columns which uniquely identified rows called primary key.
A table has specified number of columns, but can have any number of rows. Each row is identified by one or more values appearing in a particular column subset. A specific choice of columns which uniquely identified rows called primary key.
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