Package javax.persistence
Annotation Interface UniqueConstraint
Specifies that a unique constraint is to be included in
the generated DDL for a primary or secondary table.
Example: @Entity @Table( name="EMPLOYEE", uniqueConstraints= @UniqueConstraint(columnNames={"EMP_ID", "EMP_NAME"}) ) public class Employee { ... }
- Since:
- Java Persistence 1.0
-
Required Element Summary
Modifier and TypeRequired ElementDescriptionString[]
(Required) An array of the column names that make up the constraint. -
Optional Element Summary