Multiple choice

What do we call a primary key that consists of multiple columns in a table?

  1. composite key

  2. double-primary key

  3. consisting key

  4. foreign key

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A Correct answer
Explanation

A composite key is a combination of two or more columns in a table that can be used to uniquely identify each row in the table. When multiple columns are combined to form a primary key, it is specifically referred to as a composite primary key.