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@Target(value={})
@Retention(value=RUNTIME)
public @interface UniqueConstraintThis annotation is used to specify 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 { ... }
| Required Element Summary | |
|---|---|
String[] |
columnNames
(Required) An array of the column names that make up the constraint. |
| Element Detail |
|---|
public abstract String[] columnNames
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Copyright 2006 Sun Microsystems, Inc. All rights reserved.