T R A N S A C T I O N S  

not very transparent therefore this should be used with care 

tnieCl

EJB

Client

EJB

Required: if no transaction is available one will be created otherwise the existing one 

will be used. A bean developer can ensure that its code runs always in a transaction 

like a bank account transfer 

tnieCl

EJB

Client

EJB

RequiresNew: a new transaction will be created and if one already exists it will be 

suspended. A bean developer can ensure that its code will run in its own transaction 

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