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_cm1) created in the servlet.

Here is the flow-

1. Standalone client invokes a servlet

2. Servlet creates table CUSTOMER_cm1

3. Servlet starts a UserTransaction

4. Servlet adds a row in the CUSTOMER_cm1 table

5. Servlet calls the EJB webservice

6. EJB webservice adds a row in the CUSTOMER_cm1 table

7. Servlet commits the transaction

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

9. Table CUSTOMER_cm1 is dropped