Question

2 features of primary key​

Answer 1

Answer:

characteristics:

There can only be one primary key for a table.

The primary key consists of one or more columns.

The primary key enforces the entity integrity of the table.

All columns defined must be defined as NOT NULL.

Explanation:

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Answer 2

Answer:

There can only be one primary key for the table.

The primary key consists of one or more columns.

Explanation:

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