The complexity of elementary algebra and geometry
Journal of Computer and System Sciences
A closed-form evaluation for Datalog queries with integer (gap)-order constraints
ICDT Selected papers of the 4th international conference on Database theory
Hilbert's tenth problem
Selected papers of the 9th annual ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Solving satisfiability and implication problems in database systems
ACM Transactions on Database Systems (TODS)
Simulation, verification and automated composition of web services
Proceedings of the 11th international conference on World Wide Web
Business artifacts: An approach to operational specification
IBM Systems Journal
Artifact-centered operational modeling: lessons from customer engagements
IBM Systems Journal
Model-driven synthesis of SOA solutions
IBM Systems Journal
Automatic construction of simple artifact-based business processes
Proceedings of the 12th International Conference on Database Theory
Automatic verification of data-centric business processes
Proceedings of the 12th International Conference on Database Theory
Towards formal analysis of artifact-centric business process models
BPM'07 Proceedings of the 5th international conference on Business process management
Artifact systems with data dependencies and arithmetic
Proceedings of the 14th International Conference on Database Theory
Comparing workflow specification languages: a matter of views
Proceedings of the 14th International Conference on Database Theory
Automatic verification of data-centric business processes
BPM'11 Proceedings of the 9th international conference on Business process management
Comparing workflow specification languages: A matter of views
ACM Transactions on Database Systems (TODS)
Highly expressive query languages for unordered data trees
Proceedings of the 15th International Conference on Database Theory
Artifact systems with data dependencies and arithmetic
ACM Transactions on Database Systems (TODS)
A framework for behavior-consistent specialization of artifact-centric business processes
BPM'12 Proceedings of the 10th international conference on Business Process Management
Verification of relational data-centric dynamic systems with external services
Proceedings of the 32nd symposium on Principles of database systems
Hi-index | 0.02 |
In this paper we initiate a study on comparing artifact-centric workflow schemas, in terms of the ability of one schema to emulate the possible behaviors of another schema. Artifact-centric workflows are centered around "business artifacts", which contain both a data schema , which can hold all of the data about a key business entity as it passes through a workflow, along with a lifecycle schema , which specifies the possible ways that the entity can evolve through the workflow. In this paper, the data schemas for artifact types are finite sets of attribute-value pairs, and the lifecycle schemas are specified as sets of condition-action rules, where the condition is evaluated against the current snapshot of the artifact, and where the actions are external services (or "tasks"), which read a subset of the attributes of an artifact, which write onto a subset of the attributes, and which are performed by an entity outside of the workflow system (often a human). The services are also characterized by pre- and post-conditions, in the spirit of semantic web services. To compare artifact-centric workflows, we introduce the notion of "dominance", which intuitively captures the fact that all executions of a workflow can be emulated by a second workflow. (In the current paper, the emulation is focused only on the starting and ending snapshots of the possible enactments of the two workflows.) In fact, dominance is a parametric notion that depends on the characterization of the policies that govern the execution of the services invoked by the workflows. In this paper, we study in detail the case of "absolute dominance", in which this policy places no constraints on the possible service executions. We provide decidability and complexity results for bounded and unbounded workflow executions in the cases where the values in an artifact range over an infinite structure, such as the integers, the rationals, or the reals, possibly with order, addition, or multiplication.