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Solving of business problem with Information System.
Q1. What are the different Procedures to solve business problem?
There are two procedures to solve business problem with information system:-
* By using system approach to problem solving.
* By developing information system solution.
Q2. Define system approach to problem solving?
There are five main phases in System Approach:-
1. Define the problem:-
* Define a problem or opportunity using system thinking.
* Problem is basic condition i.e. causing under unexpected results.
* An opportunity presents the potential for desirable results.
* System thinking helps to see the components and interrelationship of system in any situation.
2. Developing alternative solution: - In this we find the alternative solution of the giving problem. Source of alternative solutions are:-
* Experience.
* Advice of others.
* Recommendation of consultants.
* Suggestion of expert system.
* Help from software package.
3. Select the solution: - Evaluation has been done to meet the best solution for business and personal requirement.
4. Design and Implementation:-
* After selecting a solution is must be designed and implemented.
* Design specifies the detailed characteristics and capabilities of the people, hardware, software and all resources.
* In implementing stage we specify the resources, activities and time needed for proper implementation.
5. Post implementation review:-
* Results of implementing a solution should be monitored and evaluated.
* The objective is to check that the implemented solution meet the objectives of business or not.
Q3. Define “Developing information system solution”?
There are seven stages in it:-
1. SDLC(System development life cycle):-
* When the system approach is used to develop of Information system solution to business problem, it is called Information system development.
* It involves a multi step process called SDLC: - 1) Investigation.
2) Analysis.
3) Design.
4) Implementation.
5) Maintains.
2. Starting System development process (Investigation):-
* Determine whether a business problem exists.
* What is the cause of Problem.
* New or improved information system can help to solve it.
* For this, a feasibility study is conducted.
* Develop a project management plan and obtain management approval.
3. System analysis:-
o It is an in-depth study of end user information needs.
o It is the basic for the design of new information system.
o It involves a detailed study of :- 1) Organization.
2) Processing System.
3) Functional requirements.
d) System design:-
o It specifies how system will accomplish its objective.
o It contain in it: - 1) User interface design.
2) Data design.
3) Process design.
4) System specification.
e) Prototyping: - It is a rapid development and testing of working model in an
Interactive process used by both system analyst and end user.
6. Implementing a new information system:-
* After completion of designing.
* It involves: - 1) Software development.
2) Testing of program and procedure.
3) Development of documentation.
4) Activities related to installation.
5) Training of end user.
g) Maintenance: - It involves monitoring, evaluation, modifying a system to meet
requirements of business.
7. CASE (Computer-aided system Engineering):-
* It involves using software package called CASE tool to perform many activities of system development.
* CASE packages provide many tools for front end of SDLC i.e. planning, analysis, design and for backend of SDLC i.e. implementation and maintenance.
* Integrated CASE tools (I-CASE) are available that can assist all of stages of SDLC.
* CASE tools support both forward engineering and back word engineering.
