1. IS = Parts working together to deliver information to users. The importance of the process aspect—what processes do (system functionality), and how they take control over system (logic). Common View of IS: data, IT, processes, user interface What is Information System: Systems Analysis & Design Summary More…

2. System Services View of IS: - data processing - data management - user interface System Architecture View: IS is interrelated tiers. What is Information System Object View: system parts are object and classes; packages and components.

3. Systems analysis— - Analyzing organizational tasks and processes that deliver some information—application domain - Includes manual task and processes - Deliverable: Logical design The Emphasis of the Course Systems Design (some exercises, term paper)

4. Data Process/Functionality Logic (control, decisions) User Interface Object Interactions Data Flow Diagram Class/Object Diagram Activity Diagram Use Case Diagram Decision Table Sequence Diagram Dialogue Diagram xx x x x xxx xx x x x x x x = primary purpose a diagram is invented for = provides hints/indications Tools for Systems Analysis

5. Challenges in Systems Analysis What is in the system? Where is system boundary? Process thinking (DFD, Activity Diagram) vs. Non-process thinking (use case diagram) Focus on details and completeness Capability to switch between big and small pictures Capability to read (and sometimes write) different notation schemes.

6. Some Highlights 7 diagrams for systems analysis studied (see table) MIS Perspective emphasized: - IS delivers information that serves organizational & management purposes - Management perspective (systems examples rooted in specific organizational contexts; concern with end-users, cost-benefit, systems adoption…) More…

7. 2 Tools: MS Project, Visio Different systems studied: sales and inventory tracking doctor appointment, email, DSS prescriptions management Web storefront order management class registration… Some Highlights

8. Links to database management course (9.350) Data modeling (class and object diagram) – drill down on data part of class/object, not so much on methods part. Information system – the data foundation is in DB systems. IS is a more specific application, with a purpose defined by the type of data/information it delivers. That’s All Folks!