UNIQUE: UNIQUE Constraint enforces a column or set of columns to have unique values. If a column has a unique constraint, it means that particular column cannot have duplicate values in a table. Example : CREATE TABLE STUDENT( ROLL_NO INT NOT NULL, STU_NAME VARCHAR (35) NOT NULL UNIQUE, STU_AGE INT NOT NULL, STU_ADDRESS VARCHAR (35) UNIQUE, PRIMARY KEY (ROLL_NO) ); - Study24x7
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UNIQUE:
UNIQUE Constraint enforces a column or set of columns to have unique values. If a column has a unique constraint, it means that particular column cannot have duplicate values in a table.


Example :

CREATE TABLE STUDENT( ROLL_NO INT NOT NULL, STU_...

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