Transaction Scenario . Help Rqrd..

Snenario
=======
A transaction is unit of work containing activities that need to be completed together. For instance, for an online travel site, you might have a session bean method bookTravel that takes a credit card, ensures its valid, charges the price of the ticket on the credit card, and books the ticket. This method invoke methods on other EBJs to help accomplish these steps. For instance, methods of Customer, CreditCard and AirlineTicket beans will be invoked during the execution of this method. If all these steps complete successfully, the transaction succeeds. If any of these steps fails, the entire transaction fails and any changes made by previous steps are rolled back
In this Scenario , what are the components which are required to make it work as described.
Lets say:
1) What should be the Transaction attribute setting
2) What should be the iSolation level setting
3) How many Connection object should be created across the Transaction
4) what should be the AutoCommit Property of the Connection.

1. Container manager transaction is best approach for this scenario.
2. The default settings of the container should work for you. I think for most of them it is Read Committed. Also I think you have no control over it.
3. Container can manage the number of connections as required.
4. Since it is container managed, autocommit is false and we should not play with it.
Thanks.

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