Chapter 13: Systems Analysis & Design
1st of all as we know information system of an organization contain lots of information such as customer details, business transaction record, expenses record and others information that needed by organization.
This is the reason why the management of an organization have to always examine and improve the quality of information system so that it can perform efficiently all the time.
The brief explanation of the steps involve in information system examination and improvement as following.
There are 6 steps to examine and improve information systems:
1) Preliminary Investigation
- firstly, management of an organization identify the problem appear in information system then alternatives will be offer to solve the problem appear.
- the alternatives offer should can solve the problem identified by management.
- after the appropriate alternatives had been selected, a report will prepare for top level of management to decide what alternative should be taken to solve the identified problem.
2) Systems Analysis
- in this stage, informations about how the present information system perform will be gathered so that can help to improve the new information system design.
- report about present information system, improvement should be make on present system will be prepared.
- top management can review the problem of present system and can also view the steps involve in designing new system prepared by system designers.
3) Systems Design
- several alternatives for designing new information system suggested and only the best alternative will be choose.
- system designing report will prepared for management so they can understand more about the system include costs in designing this system and benefits can get from this alternative choice.
4) Systems Development
- software needed to develop new system will obtain by system designers to help them in developing new system.
- in the other hand, they will determine whether new hardware need for new system development.
- since the hardware and software are installed, the system will be tested and determine it efficiency.
- if the new system cannot work properly, problem will be identify and re-examine the system to find out the problem. Testing on system will take for several times to make sure it can work properly and fulfill the requirement of organization management.
5) Systems Implementation
- in this stage, new information system will replace present information system. This process named 'conversion' and also can said as converting from old system to new system.
- training for employees will be provided on how to use the new information systems. Training for employees is important, it is because they will use the this systems in future.
6) Systems Maintenance
- lastly, maintenance on information system after new information system is using in an organization should make. This is to make sure the system always in good condition.
- evaluation on new information system will be make so that can know its performance.
Thats all for the briefly explanation on how to develop new information system.
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