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For example, a banking customer requesting a bank loan is a simple process. The following diagram depicts this process and through that, explains some of the key workflow components of a typical business process.
Figure: Bank load loan request process
Process Initiator: In the "Bank Loan Request" process, a banking customer is the client who initiates a loan request.
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Request Processing: This is typically a sub process that produces an output internally during the execution of the business process. It analyzes the input data, verifies loan eligibility of the client through the execution of several logical expressions etc.
Human Task: This is where a human interaction is involved in the business process. In this particular example, a bank employee sends an acknowledgement to the bank customer regarding his loan request approval.
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Usually asynchronous services are used for long-lasting operations and synchronous services for operations that return a result in a relatively short time. Typically, when asynchronous Web services are used, the BPEL process is asynchronous.
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In addition to the above terms, the following article in WSO2 Oxygen Tank explains how to deploy a sample service and a BPEL process, establish a link with a Web service, invoke the process from a client, along with related topics to better understand how the WSO2 BPS works overall: http://wso2.org/library/articles/writing-simple-ws-bpel-process-wso2-bps-apache-ode. |
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