In a database, a primary key is a field which contains?

Assessment: WAEC SSCE - Computer Studies - 2016 (Objective) Subject: Computer Studies

Question 1 Report

In a database, a primary key is a field which contains?

 

Answer Details
In a database, a primary key is a field which contains unique entries. This means that no two records in the database can have the same value in the primary key field. The purpose of a primary key is to uniquely identify each record in the database and to allow for easy retrieval and manipulation of data. It can be a text, numeric or alphanumeric value, as long as it is unique for each record. Duplicate values are not allowed in a primary key field, as this would make it impossible to distinguish between two or more records.
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