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System Lifecycle

(1) The Stages Involved In Making A New Computer System Are Called The System Lifecycle.
















Remember Bob being hungry? He used the system lifecycle to solve his problem:
Identify "I can't concentrate on my revision." Bob's worked out he
has a problem.
Analyse "Why can't I concentrate on…

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Information on the business, its problems & requirements can be found out in various ways e.g. personal interview,
collecting documents business currently uses, email, letter, phone interview, watching the business at work,
questionnaires etc. Once information has been collected (by interview, questionnaire etc) then it has to be analysed
to…

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(2)

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Starting To Use The New System/Methods Of Implementation
Once it is ready to be used a decision has to be made on how to start using the new system:

Direct Changeover (also called Big Bang)
Completely stop using the old system one day and start using the new system only…

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Here are some related past paper questions to try:
1.A company has a problem that they have analysed. Before the solution is implemented it must be designed.
Identify four things that need to be designed. [4]
(if the business needed to use a database to store their data, then they…

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9. The manager of a local cinema has employed a systems analyst to update the present administration system.
a) Give two methods the analyst might use to collect data about the present system. [2]
b) Discuss the advantages & disadvantages of these methods. [6]
c) Describe one other stage that…

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( )
Check the system gives the
required output.
Create the data and file structures.
Describe any validation required.
Draw diagrams to describe the
system processing.
Interview future users about their
requirements.
Specify suitable hardware and
software.
18. A cinema is to use a computer booking system. Part of the…

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24. A company installs a new computer system. At 9.00am on Monday the old system is switched off and the
new system is put into use.
a) What name is give to this method of changeover? [1]
b) State two problems that may arise as a result of using this…

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