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Abstract

A distributed transaction processing system includes a process automation application, referred to as a commerce exchange server, that manages transaction processing and message flow among application programs in a distributed computer network such as the Internet. The system includes a specially designed application interaction protocol that implements the request-reply, publish-notify and broadcast application interaction models. The system also uses a novel transaction definition data structure for specifying the component operations and processing logic that comprise the transaction. The transaction definition data structure allows for the use of conditional logic that specifies constraints on the sequence of operation execution. A transaction service architecture builds a transaction instance data structure to perform the transaction, produces the messages needed for performing the constituent operations that comprise the transaction, and manages the message flow to and from the service applications that perform the constituent operations. The process automation application together with its service applications constitute a domain. The system's architecture permits a process automation application in one domain to interact with a process automation application in a second domain. The application interaction protocol together with the transaction definition data structure permit the process automation application to distribute constituent operations for processing to service applications in different commerce exchange server domains.

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