Introducing Contracting in Distributed Transactional Workflows

Authors:
E. M. Verharen;M. P. Papazoglou
Affiliations:
-;-
Venue:
HICSS '98 Proceedings of the Thirty-First Annual Hawaii International Conference on System Sciences-Volume 7 - Volume 7
Year:
1998

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Abstract

In this paper we describe a flexible transactional workflow environment based on an extensible object-oriented framework built around class libraries, application programming interfaces, and shared services. To enforce coor-dination in workflow com-munications and model real-life business applications, the concepts of 'obligation' and 'contract' are introduced. A contract is a semantic agree-ment between two or more collaborating workflows in terms of a protocol-oriented specification of obligations. It is used to describe the communication between systems by means of nested transactions associated with the provi-sion of services. An example from the banking world il-lustrates this approach.