Primary Key
Summary: A field that uniquely identifies each record in a database table. Must be unique for every record and cannot be null. Example: StudentID, ProductCode. Tags: concepts computer-science igcse-computer-science databases Created: 2026-05-08T14:03:00Z Last Updated: 2026-05-08T14:03:00Z
Content
A field that uniquely identifies each record in a database table. Must be unique for every record and cannot be null. Example: StudentID, ProductCode.