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Patterns: Flexible Self-Service Applications Using Process Choreography

TOP : Application Development

Patterns: Flexible Self-Service Applications Using Process Choreography

In a rapidly changing business environment, keeping up with market and customer demand is crucial to survival. The infrastructure and applications that are at the heart of the business must be readily adaptable to meet those changing demands. With that in mind, this IBM Redbook focuses on two Self Service application patterns, Self Service::Decomposition and Self Service::Agent, and looks at how these patterns can introduce business agility into an enterprise.

The Decomposition application pattern is instantiated with the process choreographer feature of WebSphereŽ Business Integration Server Foundation and features BPEL4WS technology.

Using process choreography allows us to define business processes as a set of activities executed in a particular sequence to achieve a business goal. Using process choreography ensures that business applications consist of flexible and adaptable elements allowing the application to change rapidly to meet business demands. As business processes change, new elements of the process can be inserted, and old elements rearranged or deleted. The implementation of each element in the process is still managed by the owning business units.

Integrating the use of business rule beans into the process or back-end applications allows rapid change to meet business requirements. Business rule beans externalize business elements that can be changed dynamically. These rules are defined and changed by business people, not programmers.

Moving into the Agent pattern, we enhance the capability of the business process and back-end applications to access business data. With the addition of an operational data store (ODS) we greatly improve the ability of applications to retrieve relevant business data quickly. Data from disparate legacy systems is transformed into a common format and gathered in the ODS for use by the business processes. The ODS contains only a subset of the legacy data, providing a streamlined, consistent, and current view of the business. The ODS can be read-only, or can allow data to be modified, in which case it is synchronized in near real-time with the legacy data. Integrating data at the ODS level versus changing back-end legacy systems provides additional business flexibility that is especially apparent during mergers and acquisitions.
Price: $50.00 $40.00
Pages: 288
Date Published: September 16, 2004
ISBN: 0738490482
Author: IBM Redbooks
Product Number: SG24-6322-00
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