Understanding Database Constraints and Query Techniques in DaMeng
Database Constraints in DaMeng
What Are Constraints?
Constraints are rules enforced on table columns to insure data integrity. They guarantee both accuracy and validity of stored data.
Constraint Types
Primary Key Constraint
A primary key uniquely identifies each row in a table. This field must contain unique, non-null values.
Creating a table ...
Posted on Fri, 08 May 2026 01:03:03 +0000 by lostincoding