Quick Intro to Business Process Re-engineering - PowerPoint PPT Presentation

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Quick Intro to Business Process Re-engineering

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Quick Intro to Business Process Re-engineering Basic Introduction Important notice: This handout is a much simplified version of three handouts: 11.2 Object modelling – PowerPoint PPT presentation

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Title: Quick Intro to Business Process Re-engineering


1
Quick Intro to Business Process Re-engineering
  • Basic Introduction
  • Important notice
  • This handout is a much simplified version of
    three handouts
  • 11.2 Object modelling
  • 11.3 Dynamic modelling and Business Process
    Re-engineering (BPR)
  • 11.4 Theories Underlying Approaches to Systems
    Modelling
  • You can find the original documents at
  • http//www.robinbt2.free-online.co.uk/virtualclass
    room/contents.htm

2
Purpose of modelling
3
Aims of Modelling
  • Social Engineering ?
  • Change agent ?
  • Support / facilitation ? ? ?
  • Gain Understanding ?
  • Encourage group working ?

4
Modelling paradigms
  • Object orientated
  • OMT
  • UML (Unified Modelling Language)

5
Objects
6
Objects Classes
  • Class Template
  • In databases table definition
  • Object Instance
  • In databases a record

7
Classes
Amount of detail shown may vary
8
Views
  • A model is always context specific.
  • It is never purely a reflection of reality -
    whatever that is!

9
Data / Activities
  • Objects / classes have two aspects
  • Data static aspect
  • Activities dynamic aspect

10
Dynamic aspects Sequence Diagrams (Event traces
in OMT)
11
Enhancements to the sequence diagram
12
Sequence diagrams - Issues
  • Guard condition
  • Incremental development
  • Limitations

13
Exercise Device a sequence diagram for
  • 1 Two situations (scenarios) involving yourself
    at work.
  • 2 Items of service claims forms for GPs,
  • 3 Clinical audit within a Hospital department,
  • 4 Multidisciplinary assessment in the community,
  • 5 Commissioning negotiation.
  • 6 A E Assessment
  • 7 Care Programme Approach review meeting in
    Psychiatry

14
(Business) Process Re-engineering (BPR)
Before
15
After BPR
16
Looking at single objects (state diagrams)
17
Limitations of BPR
  • Never lived up to initial expectations.
  • original idea radical restructuring of
    organisations
  • Now a more gradualist, participative approach
  • Why?
  • 1. BPR methods are crude i.e job satisfaction,
    informal methods of communication, etc. not
    analysed
  • -gt more qualitative (i.e. ethnographic)
    techniques e.g. video analysis -gtproblems
    regarding -gt quality -gt generalisability.
  • 2. Implementation of change not managed.

18
Summary
  • Systems modelling -gt change agent
  • Object oriented modelling
  • Unified Modelling Language (UML)
  • Objects
  • Classes
  • Views

PTO
19
Summary (cont.)
  • Sequence Diagrams
  • Additions to Sequence diagrams
  • Incremental development
  • Business Process Re-engineering (BPR)
  • Limitations of BPR
  • State Diagrams
  • Appendix - Additional information
  • References
  • Useful Internet links
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