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Information Systems Design 3

Information Systems Design 3. UFIE8V-20-3 2004-5. Lecture topics. Admin Staffing UWE Online Assessment Themes Case studies Changes from 2003-4 Workshops Next week Following week. Staff. Chris Wallace Module leader and the majority of the lectures Kevin Doyle

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Information Systems Design 3

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  1. Information Systems Design 3 UFIE8V-20-3 2004-5

  2. Lecture topics • Admin • Staffing • UWE Online • Assessment • Themes • Case studies • Changes from 2003-4 • Workshops • Next week • Following week

  3. Staff • Chris Wallace • Module leader and the majority of the lectures • Kevin Doyle • Some lectures and linkage with ISD2 • John Betts • Tutorials (currently recovering from hip operation) • Prakash Chatterjee • Keynote lecturer on XML

  4. Assessment • Exam only – no coursework • Good to be relieved of the pressure of assignments – free to do interesting things • Loss of safety net • Summer Exam had marks from 85-15, 15% 1st, 15% fails – resists 95% pass • Mock and summer exams and answers to be posted • Exam structure: • 3 hour • One compulsory short, technical questions 25% • 3/ 7 problem-based, topic-based questions 25% each

  5. UWE Online • Module set up and should be visible – if not you are not enrolled! • Will be used for • Notices • Tutorial reminders • Discussion groups • LINKs to teaching material – slides, notes, applications • Key is the workplan which links from the schedule to supporting documents.

  6. Themes • 4 layers • Development methods • Information Systems • Technology • Common tools and techniques

  7. Development Methodology themes • The study of the process of IS development and a critical analysis of ISD process models • What do we mean by an IS and by ISD? How ISD different from software development, software engineering? • Alternative process models – agile and XP processes in contrast to waterfall-based SSADM • Alternative ways of viewing ISD: • knowledge-based • information management • social engagement • learning • a ‘conversation with materials’ …

  8. Information Systems themes • What’s the boundary(s) of an IS? • Different kinds of IS require different knowledge bases – of application domain, of relevant technologies and approaches, the role of frames and patterns in ISD • Specific ISD kinds: • Information retrieval and display • Matching and classifying • Business process support

  9. Technology themes • Technology provides the means to achieve information system goals. • 3-tier architecture • Presentation - (IE, Mozilla + HTML, Javascript) • Application layer (PHP) • Persistence layer or Data store (MySQL, Oracle) • SMS and WAP as alternative presentation layers • XML and related technologies • Using and designing XML ‘applications’ • XSLT for transforming XML documents, web services • Collaboration and Business process support • Content Management Systems – Plone/Zope • Workflow modelling • Process enactment • System integration and Process orchestration

  10. Common tools and techniquesthemes • Describing Structure • Extended ER modelling, realisation in an RDBMS • Hierarchical structures – Jackson notation, XML • Using a Case tool : QSEE • Describing Processes • User stories, use cases, sequence and activity diagrams, state transition models, RAD • Classification • Terminology, taxonomy construction, testing and use • Matching • Fuzzy matching, fitness functions

  11. Case studies • 3-tier • SMS Straw Poll – workshops 3 and 4 • Travel information • Matching – biometrics • XML • Travel information • Module/Award specification • Business Process • CEMS academic processes – exam moderation

  12. Changes from 2003-4 • Less on OO – switch to Extended ER but many notations are part of the UML diagramming suite • More coherent approach to process modelling • More on XML with emphasis on XSLT for declarative processing • More explicit methodology critique • Introduction of SMS • Better use of UWE Online

  13. Next week’s workshop • Information Systems v. Computer System • What’s the difference? What’s the same? • Information Systems Development v. Software Engineering • What’s the difference? What’s the same? • Use the 4 themes to orientate your thinking • E.g. Placements office as an IS, Access database as Software • Group discussion and slide presentation • Think about this and come prepared to contribute • + briefing on Poll system

  14. Following week’s workshop • The SMS Poll system • What issue to take a poll on? • Introduction to PHP and MySQL • Understand base application • ER model the database • Hand execute the SQL queries • Design modifications for the application

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