Question

define primary key in computer


only genius will answer​

Answer 1

Answer:

In the relational model of databases, a primary key is a specific choice of a minimal set of attributes (columns) that uniquely specify a tuple (row) in a relation (table). Informally, a primary key is "which attributes identify a record", and in simple cases are simply a single attribute: a unique id.

Explanation:

hope this helps you

Answer 2

Answer:

unique identifier

Explanation:

primary key define the uniqueness which help to find all the queries.