Understanding MySQL Constraints
Constraints are rules applied to table columns to restrict the data that can be stored. Their purpose is to ensure data correctness, validity, and integrity within the database.
Categories of Constraints
NOT NULL: Ensures a column cannot have a NULL value.
UNIQUE: Guarantees that all values in a column are different.
PRIMARY KEY: Uniquely iden ...
Posted on Wed, 29 Jul 2026 16:15:57 +0000 by DwarV