Hibernate 面试题与答案

Question: How do you map Java Objects with Database tables?

Answer: * First we need to write Java domain objects (beans with setter and getter). The variables should be same as database columns.

* Write hbm.xml, where we map java class to table and database columns to Java class variables.



Example :

<hibernate-mapping>

<class name="com.test.User" table="user">

<property column="USER_NAME" length="255″
name="userName"; not-null="true" type="java.lang.String"/>

<property column="USER_PASSWORD" length="255″
name="userPassword" not-null="true" type="java.lang.String"/>

</class>

</hibernate-mapping>