Question

Define primary key as a short question ​

Answer 1

Answer:

follow me

Verified Answer√

Explanation:

A primary key is a unique identifier for a database record. When a table is created, one of the fields is typically assigned as the primary key. ... It also helps relate records across multiple tables. Therefore, while multiple fields within a table can be defined as "Unique," each table can only have one primary key.

Answer 2

Answer:

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

Explanation:

Please mark my answer brainliest