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The Java Persistence API (JPA) : a standard interface-based Java model abstraction of persistence, developed by the JCP.

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/*
 * Copyright (c) 2008, 2009, 2011 Oracle, Inc. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.  The Eclipse Public License is available
 * at http://www.eclipse.org/legal/epl-v10.html and the Eclipse Distribution License
 * is available at http://www.eclipse.org/org/documents/edl-v10.php.
 */
package javax.persistence;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Specifies multiple secondary tables for an entity.
 *
 *  *    Example 1: Multiple secondary tables assuming primary key columns are named the same in all tables.
 *
 *    @Entity
 *    @Table(name="EMPLOYEE")
 *    @SecondaryTables({
 *        @SecondaryTable(name="EMP_DETAIL"),
 *        @SecondaryTable(name="EMP_HIST")
 *    })
 *    public class Employee { ... }
 *
 *
 *    Example 2: Multiple secondary tables with differently named primary key columns.
 *
 *    @Entity
 *    @Table(name="EMPLOYEE")
 *    @SecondaryTables({
 *        @SecondaryTable(name="EMP_DETAIL",
 *            pkJoinColumns=@PrimaryKeyJoinColumn(name="EMPL_ID")),
 *        @SecondaryTable(name="EMP_HIST",
 *            pkJoinColumns=@PrimaryKeyJoinColumn(name="EMPLOYEE_ID"))
 *    })
 *    public class Employee { ... }
 * 
 *
 * @since Java Persistence 1.0
 */
@Target(TYPE)
@Retention(RUNTIME)

public @interface SecondaryTables {
	SecondaryTable[] value();
}