1. DEFAULT Constraint: Provides a default value for a column when none is specified.

2. UNIQUE Constraint: Ensures that all the values in a column are different.

3. PRIMARY Key: Uniquely identifies each row/record in a database table.

4. FOREIGN Key: Uniquely identifies a row/record in any another database table.

5. CHECK Constraint: The CHECK constraint ensures that all values in a column satisfy

certain conditions.

6. INDEX: Used to create and retrieve data from the database very quickly.

7. NOT NULL Constraint: Ensures that a column cannot have a NULL value.

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