Each EJB component has a transaction attribute that determines how instances of the component participate in transactions. In EAServer, you set the transaction attribute in the Transaction tab of the Component Properties dialog box.
When you design an EJB component, you must decide how the bean will manage transaction demarcation: either programmatically in the business methods, or by the container, based on the value of the transaction attribute in the deployment descriptor.
A session bean can use either bean-managed transaction demarcation or container-managed transaction demarcation; you cannot create a session bean where some methods use container-managed demarcation and others use bean-managed demarcation. An entity bean must use container-managed transaction demarcation.
