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Lecture

lecture_9 notes.docx

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Department
Information Technology
Course Code
ITEC 4030
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Description
Business Process Management Systems ITEC 4030 – Winter 2011 – Peter Khaiter Lecture 9 – Enabling Business (IT) Integration – Feb 7 Business Integration: Goals and Approaches - Review: BI is the exchange of business-critical information between applications in real time (Yee & Apte, 2001) - Goals: o Major improvement in business processes o Real-time operations o Business Activity Monitoring - Current approaches: o Routing of documents and forms: WF[M]S o Choreography (≠ orchestration)+ Messaging between apps: EAI, SOA, Web services o Shared databases: ERP - Scope can include internal systems (EAI-Enterprise Application Integration or ERP-Enterprise Resource Planning) and external ones (B2B integration) Workflow (Management) System - System that defines […] and manages the execution of workflows through the use of a software […workflow engine…] able to interpret the process definition, interact with participants and, where required, invoke the use of applications (WfMC). - Includes several software components: o Process definition tools: Process and construct modeling software o Workflow Enactment Service: Workflow engine o Workflow client applications: Point of access for participants o Administration and monitoring tools: Re-routing, rule change, resource management, performance monitoring, audit and reporting o Possible applications invoked during execution of process: e.g. inventory management tools, payment systems, billing systems, etc. - Infrastructure: clients and server(s), middleware, applications, DBMS, networks, peripherals - Functional and non-functional requirements: Selection of products based on “validated” vendors’ specs - Benefits include coordinated teamwork (management of work and information flows and electronic handoffs), real-time information (BAM), process standardization, process execution synchronized with changing business needs WFMS Build Time & Run Time Activities - Build time activities: o Definition and test of business process and related constructs o Workflow-BPR specific editing mode o Model is exported of to some specific WFMS products - Run time activities: o Interpretation of process definition o Creation and control of process instances o Interactions with identified participants o Interactions with other identified computer-based apps - The designer’s view: o Designer defines and tests the business process o Designer defines related constructs (such as forms) - The end-user’s view: o End-user establishes session o End-user obtains workitems:  Pull mode: Users request new workitem  Push mode: Workitem automatically routed to user  Grab mode: Workitem routed to available user o End performs required tasks  WFS are TPS: updates in operational database - The manager’s view: o Manager monitors execution of the business process o Managers reallocates resources /re-routes workitems EAI Basics & New Developments - Basics: o BI is achieved through the re-use of existing apps (should be cheaper!) o Original focus on “internal” operations now extended to business partners o New developments:  SOA (architecture that uses loosely coupled apps to support the requirements of business processes)  Web services (SOA where the loosely coupled apps are accessed over the Internet) - Tools and products o Tools that model and analyze complex BPs before their implementation o Servers that execute BPs o Servers that allow for connectivity between apps o Servers that allow for data transformation o Servers that allow for message transportation o Servers that allow connection to business partners via EDI (and conversion to XML) o Servers that monitor the execution of BP (provide real-time information or BAM) o Servers that allow for information integration (portlet integration)  Major vendors: IBM, Oracle, Microsoft
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