Hibernate多数据库的连接方言
< !--for oracle 9
< property name="dialect">org.hibernate.dialect.Oracle9Dialect< /property>
-->
< !--for Mysql
< property name="dialect">org.hibernate.dialect.MySQLDialect< /property>
-->
< !--for Ms SQL Server-->
< property name="dialect">org.hibernate.dialect.SQLServerDialect< /property>