System Implementation Flashcards
What is the Systems Development Lifecycle (SDLC)
Planning and Feasibility Analysis Design Development Implementation
(PADDI)
What does the Implementation stage cover?
Get FITT
File conversion
Installation (of HW/SW)
Training and documentation
Testing and changeover
Testing: Realistic (regular inputs), Contrived (unusual inputs), High volume, Acceptance (by users)
What is Lewis/Schein’s Force Field Analysis?
A method of identifying and documenting factors pushing for change and resisting it.
Driving and restraining forces.
What is Lewis/Schein’s Three Stage / Rational Approach to changing human behaviour?
Unfreeze - break up behaviour
Move - move forward to new Behaviour
Refreeze - establish new behaviour
How should a System be Evaluated?
After implementation and periodically in operation; a review of cost benefits, staff requirements, security, error rates.
Whether targeted performance criteria has been met.
What are the three types of Systems Maintenance?
Corrective (errors)
Adaptive (changes)
Perfective (improvements)
Types of IS Outsourcing
Multiple sourcing - different suppliers for different business areas
Incremental approach - progressively outsource
Joint venture - new legal entity, owner shared with the IS supplier
Application Service Provider - 3rd party provides service over a network
What is Porter’s Five Forces Model?
Five competitive forces
Threat of new entrants and substitute products
Bargaining powers of buyers and suppliers
Competition and rivalry
What are Porter’s three generic strategies for achieving competitive advantage?
Cost leadership
Differentiation
Focus
(Cost focus and differentiation focus)
What four ways to Ward and Griffiths suggest IS can be used to gain competitive advantage?
Link organisation to customers or suppliers
Integrate information in a value adding process
Enable development and marketing of new products
Inform senior management
