This tests the commit logic of transaction. An EJB webservice is invoked by a servlet. This webservice method uses REQUIRED TX_Attribute. It adds a row in the database table(CUSTOMER_cm) created in the servlet.

Here is the flow-

1. Standalone client invokes a servlet

2. Servlet creates table CUSTOMER_cm

3. Servlet starts a UserTransaction

4. Servlet calls the EJB webservice

5. EJB webservice adds a row in the CUSTOMER_cm table

6. Servlet commits the transaction

7. It is checked whether the data is correctly updated in the table.

8. Table CUSTOMER_cm is dropped