Quick Intro to Business Process Reengineering Basic Introduction

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. robinbt 2. free-online. co. uk/virtualclassroom/contents. htm

Purpose of modelling

Aims of Modelling • • • Social Engineering Change agent Support / facilitation Gain Understanding Encourage group working

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

Objects

Objects & Classes • Class = Template – In databases = table definition • Object = Instance – In databases = a record

Classes Amount of detail shown may vary

Views • A model is always context specific. • It is never purely a reflection of reality - whatever that is!

Data / Activities • Objects / classes have two aspects: – Data = static aspect – Activities = dynamic aspect

Dynamic aspects= Sequence Diagrams (Event traces in OMT)

Enhancements to the sequence diagram

Sequence diagrams - Issues • Guard condition • Incremental development • Limitations

Exercise: Device a sequence diagram for: 1 Two situations (scenarios) involving yourself at work. 2 Items of service claims 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

(Business) Process Re-engineering (BPR) Before

After BPR

Looking at single objects (state diagrams)

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 – -> more qualitative (i. e. ethnographic) techniques e. g. video analysis ->problems regarding -> quality -> generalisability. – 2. Implementation of change not managed.

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

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