I am somewhat confused about the mapping between two tables through Hibernate. My requirement is as follows:
I have two tables A and B.

A has two fields ( contentid , name) where as B has ( id, contentid, name, name2).

Now what i want is that when I update/insert in the table A, that should be automatically inserted/updated in table B.

I had tried all the combinations which are there in hibernate tutorials but not working properly, Can any one help in making the correct mapping files/classes for the aabove scenario.
Thanks in advance

What are the primary keys of both tables?
Do they share a PK? Is there only one or many Bs for every A?
Do you want the nformation on both tables to be part of a single class, or two classes?

The content id is the key common between both the tables , and i want info on both the tables and how if we update table A , B should also get automatically updated

In that case, use the "one-to-one relationship by a primary key", described in the reference documentation (7.2.2. one to one, second example).