1. 4 types of implementing information systems
Direct
Phased
Pilot
Parallel

2. Direct implementation:
New replaces old in one go
Change over done in one operation
Done on set date, usually at a quiet period

3. Phased implementation:
If first phase is successful, then second phase started
System brought into company in stages
Leading onto final phase when new system replaces old

4. Pilot implementation:
System replaces in one operation, but on a small scale
A pilot is sometimes tried in one branch, or in one location, then implemented across the company
The pilot is extended until it replaces the old system

5. Parallel running implementation:
The old and the new systems run alongside each other
Both operate independently
If it goes well, the old system is stopped

6. Implementation methods Scenario 1
Scenario – A local GP surgery
has recently had a new
computerised system install
to replace the outdated paper
based record keeping system.
Taking in to account the variables listed on the next slide; in groups of two discuss which of the implementation methods outlined earlier would be most suitable to use during the implementation stage for this system.

7. The Variables
The staff are off mixed ability and ranging in age from late 20’s to early 50’s.
Some of the latest booking made have not been inputted in to the new system.

8. Exam Style Question
A company which produces gardening tools such as spades, forks, rakes, hoes and wheelbarrows is installing a new computer-based system in its company warehouses to help load goods onto lorries more efficiently.
Describe two different methods the company could use to install this new system.

9. The role of reviews during the life of a computer-based information system
Planning
Constant Review
and
Evaluation
Implementation
Testing
Evaluation

10. The role of reviews during the life of a computer-based information system
Planning: Explain how the importance of designing a system model that matches closely to the user's mental model.

11. The role of reviews during the life of a computer-based information system
Implementation: Describe the content of the design in relation to the specification.

12. The role of reviews during the life of a computer-based information system
Testing: Describe the purpose of testing data, the importance of testing and test plans.

13. The role of reviews during the life of a computer-based information system
Evaluating: Create relationship diagrams, flow charts. Constantly review and evaluate the systems effectiveness.

14. Summary Planning Implementation Testing Evaluation Constant Review and

15. System Maintenance

16. Quick Task

17. You have 30 seconds to write down a definition
Maintenance
What does maintenance mean?
You have 30 seconds to write down a definition

18. Definitions of Maintenance
Suggestions of the definition of maintenance are: a) the state of being maintained b) the act of maintaining c) means of upkeep, support or subsistence d) care or upkeep, as of machinery or property e) the work of keeping something in proper condition

19. The three types of maintenance...
Perfective
Adaptive
Corrective

20. Perfective
Perfective maintenance is around 55% of the total maintenance performed
Perfective maintenance involves improving systems to meet the needs of its users; including enhancing the system to keep it up to date and adding additional features.

21. Perfective Perfective maintenance includes: Software upgrades
Scheduled maintenance
Preventative maintenance (cleaning up of code)
Fulfilling the requests of users
What examples can you think of? Think about systems you have came across in school or at work?

22. Adaptive
Adaptive maintenance is around 25% of the total maintenance performed
Adaptive maintenance keeps the system up to date with rules, regulations and legislation changes

23. Adaptive Adaptive maintenance includes:
Changes to the system to adhere to new health and safety regulations
Changes to the system due to the installation of new hardware or software
What examples can you think of? Think about systems you have came across in school or at work?

24. Corrective
Corrective maintenance is around 20% of the total maintenance performed
Corrective maintenance encompasses rectifying malfunctions and failures within the system

25. Corrective Corrective maintenance includes: Fixing errors
Removing viruses
What examples can you think of? Think about systems you have came across in school or at work?