Business process (BP) modeling is a building block for design and management of business processes. Two fundamental aspects of BP modeling are: a formal framework that well integrates both control flow and data, and a set of tools to assist all phases of a BP life cycle. This paper is an initial attempt to address both aspects of BP modeling. We view our investigation as a precursor to the development of a framework and tools that enable automated construction of processes, along the lines of techniques developed around OWL-S and Semantic Web Services.Over the last decade, an artifact-centric approach of coupling control and data emerged in the practice of BP design. It focuses on the "moving" data as they are manipulated throughout a process. In this paper, we formulate a formal model for artifact-centric business processes and develop complexity results concerning static analysis of three problems of immediate practical concerns, which focus on the ability to complete an execution, existence of an execution "deadend", and redundancy. We show that the problems are undecidable in general, but under various restrictions they are decidable but complete in PSPACE, co-NP, and NP; and in some cases decidable in linear time.
For almost a decade, the artifact-centered operational-modeling approach for modeling business operations, also referred to as the ''business artifact method,'' has been practiced and refined. This approach has been used in a variety of engagements, and each engagement has brought forth innovations that have enriched and strengthened the approach. In this paper, we describe three of these engagements in order to illustrate the method and highlight some of the lessons learned. The main objective of this paper is to establish the value of operational modeling in business transformation and to incorporate the lessons we have learned into a more comprehensive account of the method. We also describe the model-driven business transformation toolkit, which adds a unique value proposition to the method-the rapid and effective transformation of operational models into implementations that are manageable and can be monitored. 4 At the outset, the ACOM approach was seen as simply an alternative to more familiar approaches,
This chapter describes a design methodology for business processes and workflows that focuses first on "business artifacts", which represent key (real or conceptual) business entities, including both the business-relevant data about them and their macro-level lifecycles. Individual workflow services (a.k.a. tasks) are then incorporated, by specifying how they operate on the artifacts and fit into their lifecycles. The resulting workflow is specified in a particular artifact-centric workflow model, which is introduced using an extended example. At the logical level this workflow model is largely declarative, in contrast with most traditional workflow models which are procedural and/or graph-based. The chapter includes a discussion of how the declarative, artifact-centric workflow specification can be mapped into an optimized physical realization.
This chapter describes a design methodology for business processes and workflows that focuses first on "business artifacts", which represent key (real or conceptual) business entities, including both the business-relevant data about them and their macro-level lifecycles. Individual workflow services (a.k.a. tasks) are then incorporated, by specifying how they operate on the artifacts and fit into their lifecycles. The resulting workflow is specified in a particular artifact-centric workflow model, which is introduced using an extended example. At the logical level this workflow model is largely declarative, in contrast with most traditional workflow models which are procedural and/or graph-based. The chapter includes a discussion of how the declarative, artifact-centric workflow specification can be mapped into an optimized physical realization.
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