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...provide users with pattern compounds that represent a wellformed and sound block-structured fragment of a process. These pattern compounds have been studied within the context of structured workflows =-=[14,15,16,17]-=- and are also available in ADEPT2 [9,10]. Four types of block-structured pattern compounds are available to the user: – sequence: a totally ordered set of connected activities, – parallel compound: a ...

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...etting the right information to the right place for a specific job function, and integrating information in the enterprise [6, 9, 7, 1]. Here, we concentrate on the primary aspects of a process model =-=[12]-=-, the control structures defining the way a WFMS would order and schedule workflow tasks. We do not cover other aspects like data dependencies, actors, or organizational models. Numerous workflow mode...

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...plits or joins) [9]. It is essential that such changes are introduced systematically and that their impact is clearly understood. Workflow model transformation is a suitable approach for this purpose =-=[15]-=-. The application of pre-defined transformation operations can ensure that the modified process conforms to constraints specified in the original model. In the following we provide a set of transforma...

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...an be regarded as a variant of AOP: the weaved aspects are the injected IAM tasks, and join points are defined by security annotations in the process. A major advantage of our approach is the built-in support for SSO and cross-organizational IAM. An interesting extension could be to decouple security annotations from the WS-BPEL definition, to store them in a separate repository and to dynamically adapt to changes at runtime. A plethora of work has been published on transformations and structural mappings of business process models. Most notably, our solution builds on work by Saquid/Orlowska [76], and Eder/Gruber [77] who presented a meta model for block structured workflow models that is capable of capturing atomic transformation actions. These transformation building blocks are important for more complex transformations, as in our case when multiple process fragments for enforcement of entailment constraints are combined for a single action in WSBPEL. While this work focuses mainly on deployment time model transformations, other research also investigates runtime changes of service compositions. For instance, automatic process instrumentation and runtime transformation have previous...

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...ween sequences of messages, however the set of transformations is rather limited as it only deals with sequence of messages and doesn’t take into account more complex interactions. On the other hand, =-=[12]-=- and [13] deal with more complex transformations between more complex workflows, however they are limited to structured workflows and do not take into account temporal constraints – feature very often...

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...riate lookup value and adjusts its answers to queries accordingly [34]. Workflows. To the best of our knowledge, research on workflows is focused around the following reoccurring themes: (a) modeling =-=[5,9,35,36,37]-=-, where the authors are primarily concerned in providing a metamodel for workflows; (b) correctness issues [35–37], where criteria are established to determine whether a workflow is well formed, and (...