hibernate方便的操作数据库相当不错的 请各位下载看看啊

				//$Id: Check.java,v 1.1 2005/02/26 00:57:38 epbernard Exp $				package org.hibernate.annotations;								/**				 * Arbitrary SQL check constraints which can be defined at the class,				 * property or collection level				 * @author Emmanuel Bernard				 */				public @interface Check {					String constraints();				}