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Abstract:

As a real or virtual enterprise develops or makes use of more and more software application systems to manage all kinds of resources to conduct its business, the integration of these heterogeneous systems is becoming increasingly important. In a general integration scenario, application systems communicate with one another by sending data in certain data formats such as BODs (Business Object Documents) proposed by the Open Application Group (OAG). In order to ensure that meaningful communications take place, the data must satisfy the constraints of the source and target application systems. In this report, we use the ECAA (Event-Condition-Action-Alternative action) rule paradigm to model the constraints of BODs at build-time and validate these constraints at run-time. The BOD modeling and validation system we developed consists of a set of build-time components and a set of run-time components. At build-time, a graphical user interface tool called XGTOOLS is used to model the "data types " (entities in the OAG terminology. Examples of data types are ITEMLOCATN and ITEMVALUE) of BODs as entity classes that contain attributes, constraints, events, rules and triggers. The modeled

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