Chapter 5 Flashcards
Describe 3 advantages to a company of selecting an off-the-shelf software solution. (6 marks)
- Online help/books/training courses are readily available.
- Immediately available so can be installed ready to carry out required tasks.
- Staff may already be familiar with the software so it reduces training needs and costs.
Describe three disadvantage to a company of selecting an off-the-shelf software solution. (6 marks)
1, Memory footprint may be large as many unrequired features may be part of the solution.
- Solution may not fit exact requirements may need to be edited.
- Licence costs may be high if a large number of stations need to have the solution installed.
Explain the role of reviews during the life of a system. (6 marks)
- Continued satisfactory performance needs to be ensured, means problems can be reported early on.
- reviews are scheduled as the needs of the user changes, external legislation may require the system to change
- identification of outdated parts of the system as new hardware and software developments become available.
Describe 3 advantages to a company of selecting an custom written software solution. (6 marks)
- The memory footprint is small as the software is tailored to the users requirements.
- The end user owns the system so they will be able to sell it on for money.
- Purpose of the system will have ben met so the system does exactly what is expected.
Describe three disadvantage to a company of selecting an custom written software solution. (6 marks)
- Need to hire someone to create the software which can be expensive.
- The system will have only been tested by a small amount of people so there will be a lot of bugs, which will take time to correct them.
- Support is only available from creator of the software. Problems can occur if they go out of business or don’t support the software.
Describe why the client must be involved in the creation of custom written software. (6 Marks)
- They need to provide client details that are complete and accurate otherwise the new system won’t meet the needs of the client and will be a waste of money.
- Client should suggest modifications so the system does what the client wants.
- They should be involved in every stage of the systems life cycle to reduce bugs and errors.
Describe the involvement of client when a customer written software is being produced for them. (6 marks)
- Involved in all stages of the system life cycle from initial problem to the evaluation stage.
- They sign the requirements and agree to the budget and timescale.
- They identifies modifications before the implementation stage.
Describe parallel installation. (2 Marks)
Both systems run at the same time.
Describe phased installation. (2 Marks)
Each part of the system is installed one at a time, making sure each one is working before the next one.
Describe direct installation. (2 Marks)
The new system replaces the old system straight away.
Describe pilot installation. (2 Marks)
Each department of the business has the new system installed one by one once the system works correctly in the previous department.
Give 2 advantages of parallel installation. (2 marks)
- Little harmful effect on the business.
2. If a problem is found in the new system, then the old system is still in place.
Give 2 advantages of phased installation. (2 marks)
- Any problems found are within a small part of the system, making them easier to find.
- Limits harmful effect on the business.
Give 1 advantages of direct installation. (2 marks)
- Cheapest method in terms of staff and time costs.
Give 2 advantages of pilot installation. (2 marks)
- Any problems found can be corrected before the installation continues.
- Limits harmful effect on the business.
