PRIMARY KEY Constraint 1. Only one primary key can be created for each table.2. Uniquely identifies each row in a table.3. Enforces uniqueness.4. Enforces NOT NULL constraints implicitly. Oracle 2006.11.23
PRIMARY KEY Constraint 1. Only one primary key can be created for each table.2. Uniquely identifies each row in a table.3. Enforces uniqueness.4. Enforces NOT NULL constraints implicitly. Oracle 2006.11.23