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Published in:
2006 | OriginalPaper | Chapter
Modeling Dynamic Rules in ORM
Authors : Herman Balsters, Andy Carver, Terry Halpin, Tony Morgan
Published in: On the Move to Meaningful Internet Systems 2006: OTM 2006 Workshops
Publisher: Springer Berlin Heidelberg
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This paper proposes an extension to the Object-Role Modeling approach to support formal declaration of dynamic rules. Dynamic rules differ from static rules by pertaining to properties of state transitions, rather than to the states themselves. In this paper, application of dynamic rules is restricted to so-called single-step transactions, with an old state (the input of the transaction) and a new state (the direct result of that transaction). Such restricted rules are easier to formulate (and enforce) than a constraint applying historically over all possible states. In our approach, dynamic rules specify an elementary transaction type indicating which kind of object or fact is being added, deleted or updated, and (optionally) pre-conditions relevant to the transaction, followed by a condition stating the properties of the new state, including the relation between the new state and the old state. These dynamic rules are formulated in a syntax designed to be easily validated by non-technical domain experts.