Decomposing business process models into state machines, it is quite common to encounter so-called hierarchical workflows, i.e. the creation in a workflow of an instance of another data element, which triggers a secondary workflow. We distinguish two possible scenarios.
The technique of inheritance was introduced as an essential part of the object-oriented programming paradigm, aiming to
The use of transactions in software systems is quite a fundamental and non-trivial issue. Every one knows the obvious example of retrieving money from a cash machine. Either your account is debited and you receive the money, or none of the above happens. In case the machine fails to dispense the money, the transaction requires a rollback of the debiting. However, it is not always that straightforward. Though the use of transactions providing automated rollbacks is often desirable to end-users and system analysts, it may well be unnecessary complicated or even plainly impossible to implement for the software developer.