Information Management : 31 CHAP 3: Describing and Evaluating Business Processes What is the relationship between process architecture, purpose, performance, and product performance? What is the role of data flow diagrams in process modeling? What business process characteristics can be used to describe system design choices affecting business process success? What is the difference between structured, semistructured, and and structured tasks? What are five possible levels of integration of business processes? Why are planning and control important elements of many business processes?

Information Management : 32 Ford Motor Com. : Re-engineering Business Process Reengineering Linking Material, Purchase Orders, and Payments (p. 97) Analyze business process before information system design

Information Management : 33 Some Terms Architectural characteristics performance variables measures of performance

Information Management : 34 Process Modeling: Documenting Business Process Architecture from process architecture to customer satisfaction (p. 99) process modeling is a business process process modeling: essential part of information system development many system analysis methods: ( see SA text book) Data Flow Diagrams (DFDs) Flowchart Structured English

Information Management : 35 Data Flow Diagram Process Data Flow Data Store External Entity

Information Management : 36 Flowcharts Timing Sequence

Information Management : 37 Structured English Receive the Purchase order. For each item on the purchase order If quantity received = quantity ordered then item code is ‘match’ If item code = ‘match’ for all items in order

Information Management : 38 Describing Business Architecture Degree of structure, the effects of business process (p. 107) Structured task: –Information, processing method, format are precise –Decision, step, criteria, measurement are precise. Semistructured task: Judgment Unstructured task: poorly understood Using information to impose structure (p.109) : 過 與不及

Information Management : 39 Describing Business Architecture Range of Involvement –Range of Involvement = organizational span of people involved in a business process – 效率 : 大公司 vs 中小型企業 –Ranges of Involvement and System Effectiveness (p. 110) Level of Integration –Connection and mutual responsiveness and collaboration between distinct activities and processes. –Tight integration (tightly coupled) –Five Levels of Integration –Interfaces: WWW in Internet Note in Intranet

Information Management : 310 Five Levels of Integration (p. 113) Common Culture Common Standard Information Sharing Coordination Collaboration

Information Management : 311 Describing Business Architecture Degree of Reliance on Machines –Decision: People Machine 偏向何方？ – 華航名古屋空難 Attention to Planning, Execution, and Control –Cycle of Plan -- Do -- See (p. 116) –Improvement the Cycle by IS – 資訊需求及工作方式不同 (p. 117) Treatment of Exceptions, Errors, and Malfunctions (p. 118)

Information Management : 312 Linking Business Process Performance and Product Performance (p. 120) Evaluating Business Process Performance Variables (p.120 Tab 3.6) and Measure, Roles of IS (p. 121) Capacity: Scalability Consistency (p. 123) Productivity: Output/Investment ? cost of using PC? Cycle Time : Bottleneck (p. 125) Flexibility: 彈性製造系統 IBM 新的辦公室使用方法 Security: Internet 是企業資訊系統安全的新挑戰

Information Management : 313 Evaluating Product Performance from a Customer’s Viewpoint Measures and Role of IS (p. 129) Cost Quality Responsiveness (p. 130) Reliability Comformance to Standard and Regulations