FIRST OBSERVATION AND ANALYSIS REQUIREMENT

CONCEPT OF INVESTIGATION SYSTEM
- Difference between purpose of system and the condition of system be in fact
- Detect the problems not real account :

1. Main too ideal
2. Less the source of power and or attitude
3. Measuring of system less accurate
4. Among of ideal system and in the meantime system
   

-Problem solving:

1. Spelling out of this system
2. Develop some alternative
3. Selection the best alternative
   

- Main of investigation is showing the problems be in fact.

CONSTRAINT IN INVESTIGATION SYSTEM
-Time
-Cost
-Knowledge
-Political

RECOMMENDATION
-Result from investigation are recommendation have content :

1. Not do action whatever it.
2. Maintenance of systems
3. Modification system totality
   

STRATEGY OF INVESTIGATION
-Find all problems
-Knows reason occurs problems
-Selection best solution
-Earing opinion of subject systems
-Don't do resolve early

TECHNIQUE OF INVESTIGATION
Direct :

1. Questionnaire
2. Dialogs
3. Research
   

Indirect :

1. Procedural flow
2. Study document
3. Sampel
   

REQUIREMENT ANALYSIS
-Requirement analysis is phase interaction between analyst system and end user, which develop team system showing skill for finding response and confidence user so get good partition
-4 Reach goal:

1. Description system complete
2. Description ideal information systems
3. Bring the ideal information system at moment with observe the resource constraint
4. Provide encouragement to the confidence in the develop system
   

-Document requirement analysis:

1. Direct analysis is relationship with end user, research process, problems of collecting data.
2. Requirement user is truth requirement.
3. Constraint systemsis description constraint time and cost, skill, technology and external factors.
   

GENERATING SYSTEM ALTERNATIVES
-Creating alternatives for resolve problems information systems
-Choice of strategy:

1. Distributed versus centralized processing
2. Integrated versus dispersed database
3. Surround strategy of system development
   

SELECTING THE PROPER SYSTEM
-Strategy to compare is system compared with be based on cost and relative advantage.
-Some method compare system:

1. Break Even point Analyisis
2. Payback Period
3. Discounted PayBack period
4. Internal Rate of Return
   

FACTOR INFORMATION SYSTEM
-Kualitative factors :

1. To decrease False
2. To decrease time for repaire false
3. To decrease respons time from workstation alternative
4. Increase safety systems
5. To desrease update source active record
6. Increase comfortable user
   

REPRESENTATION LEARNING SYSTEM
- Shortly presentation
- To decrease technically details
- Represented clearly with visual tools
- If use model, use tools like laptop so more informative
- Pushed profit from information system proposal with several alternative agree with company condition