javax.persistence
Annotation Type UniqueConstraint


@Target(value={})
@Retention(value=RUNTIME)
public @interface UniqueConstraint

The UniqueConstraint annotation is used to specify that a unique constraint is to be included in the generated DDL for a primary or secondary table.

Since:
EJB 3.0 version.
Author:
Florent Benoit
See Also:
EJB 3.0 specification

Required Element Summary
 java.lang.String[] columnNames
          (Required) An array of the column names that make up the constraint.
 

Element Detail

columnNames

public abstract java.lang.String[] columnNames
(Required) An array of the column names that make up the constraint.