Download Business Process Driven SOA using BPMN and BPEL From by Kapil Pant, Matjaz Juric PDF

By Kapil Pant, Matjaz Juric

Find out how to version enterprise techniques in an SOA-compliant process utilizing BPMN, translate them into BPEL and execute them at the SOA platform. a realistic consultant with real-world examples illustrating all key options. This booklet is for CIOs, executives, SOA venture managers, enterprise strategy analysts, BPM and SOA architects, who're answerable for bettering the potency of commercial techniques via IT, or for designing SOA. It offers a high-level insurance of industrial technique modeling, however it additionally offers sensible improvement examples on the way to flow from version to execution. we predict the readers to be acquainted with the fundamentals of SOA.

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Extra resources for Business Process Driven SOA using BPMN and BPEL From Business Process Modeling to Orchestration and Service Oriented Architecture

Sample text

Instead of invoking services by calling their operations, we will simply trigger a business event. Such events will be consumed by those services and processes that have subscribed to the event. ESB will play a central role in this scenario, because it will monitor, route, and manage events in the same way as service invocations. [ 41 ] SOA and Business Processes Registry and Repository A very important aspect of SOA is re-use. Re-use at the service level means that when we compose executable processes (in BPEL), we re-use existing services as far as possible.

In other words, it is required that we relate process activities to the various services. This step is best carried out if we have a portfolio of existing services that are re-usable and in conformance to other SOA characteristics (which we will describe later in this section). If we do not have existing services, we will also need to implement the services, where we have three options: °° To implement new services °° To expose the business logic from existing applications °° To use user tasks to delegate the activities to employees, and possibly automate these tasks in the future Once we automate the process, we will take up process optimization.

Within enterprises, BPEL is used to standardize enterprise application integration, and extend the integration to previously isolated systems among business partners. Between enterprises, BPEL enables easier and more effective integration with business partners. Further, BPEL encourages enterprises to define their business processes, which in turn leads to business process optimization, re-engineering, and selection of the most appropriate processes, thus further optimizing the organization. Definitions of business processes described in BPEL do not influence existing systems, thus stimulating upgrades.

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