4th Quiz

FIRST OBSERVATION AND ANALYSIS REQUIREMENT

INVESTIGATION SYSTEM CONCEPT

There are some point about Investigation System Concept, which the following:

1. Discrepancy between the objective of system and the real condition of system
2. Problem detection report is not real, because:

a. A goal that is too ideal, too difficult to achieve

b. Lack of resources and or attitude

c. Measurement system is less accurate

d. System that is the purpose behind Goal system that is out of date

e. The difference between the system and the system idel while

3. Problem solving:

a. Investigation to the system that is running

b. Description of the condition of the system that runs through it in detail

c. Getting a consensus that the ideal system

d. Developed several alternative

e. Select the best alternative
4. For the purpose of the investigation indicate that problems are actually happening

PROBLEMS IN INVESTIGATION SYSTEM

Investigations in several problems that often appear are:

1. Time

2. Cost

3. Knowledge

4. Politic

5. Intervention

RECOMMENDATION

A result from investigation is a recomendation, that are:

a. Does not take any action if the problem does not exist
b. Perform system maintenance for a small problem

c. Increasing the ability or skills to use the system

d. Consider modifications to total system

e. Putting the problem to occur in the development plan system is carried out immediately

INVESTIGATION TACTICS

Investigation tactics is important because that able to:

a. find a problem or issues

b. knowing the causes of the emergence of problems

c. determining the right solution

Some of the tactics that can be done:

a. Listen to opinions the subject of system
b. Don't give an early breakthrough
c. Compare the stories from the subject of system concerning in the same case

d. Note the logical inconsistency problem

INVESTIGATION TECHIQUE

Directly:

a. The questionnaire

b. discussion

c. Observation

Indirectly

a. Flow of the procedure

b. Reviewing documents

c. Sample

d. Tabular

RECENTLY SYSTEM DESCRIPTION

a. Inputs

b. Outputs

c. Files

d. Data elements

e. Transaction and document action volume

f. Data flow diagrams

ANALYSIS NEEDS

Stage of intensive interaction between the systems analyst with the end user where the system development team show their expertise to get feedback and trust so that the user get a good participation.

FOUR OBJECTIVES THAT WANT TO ACHIEVED

1. Explain the complete system

2. Information system that describes the ideal

3. Bringing information system to the ideal conditions at this time with attention to resource constraints

4. Providing encouragement to the user's confidence in the system development

METHOD NEED ANALYSIS

a. FAQ
b. Kuisioner
c. Observation
d. Analysis procedure
e. Document observation

RESOURCES PROBLEMS

a. Time
b. Money
c. Expertise
d. Technology
e. External Factors

DOCUMENT ANALYSIS NEEDS

– Analysis brief : relation with end user, process monitoring, data collect problem

– User needs : truly needs, report needs, training needs and new system effect.

– System problem : explain time and cost problem, skill, technology and external factor.

– Documents, data collect instrument, statistic consensus, physical and logical data flow, starting data element on data dictionary.

GENERATING SYSTEMS ALTERNATIVES

How to approach the condition of the system at this time with the condition of the ideal system?

- Create an alternative to solve the problem of information system
- The best alternative is applied wisely

OPTION STRATEGIES

- Distributed versus centralized processing

Changes in decision-making information from the centralized data processing to the end user Decentralized responsibility center

- Integrated versus dispersed database

System designer must consider the data are entered in the data base and into the file

- Surround Strategy of System Development

About important environmental strategy in the case of company takeovers because the

information system of other companies may vary with the company at this time.

TACTICAL OPTION

- The design is done before the selection operation

OPERATIONAL DESIGN OPTIONS

1. Input

a. Online Vs Off Line Data Entry

b. Keyed Vs Machine Readable Data Entry

c. Centralized Vs Decentralized Data Entry

2. Process

a. Batch Vs Realtime record update

b. Sequential Vs Direct Access to records

c. Single Vs Multiple User update of records

3. Output

a. Traditional Vs Turn Around Documents

b. Structured Vs Inquiry based reports

SELECTING THE PROPER SYSTEM

1. Compare tactics: systems based on the comparison of costs and benefits relative; There are 3 ways the system "A" said the system is superior to the other if :

- "A" has a cost lower than "B" and their profit same.

- "A" has a cost lower than "B" and "A" result in more profits from the "B"

- "A" and "B" have the same costs but the resulting benefit "A" more.

2. Some methods of comparison system
- Break Even point Analyisis
- Payback Period
- Discounted PayBack period
- Internal Rate of Return

3. Category Cost
- Hardware
- Software
- People
- Suppliers
- Teleccommunications
- Physical sites

4. Fee Details
Comparing the cost of information systems through the life of the system, analysis is calculating the cost changes for the future and there are 3 models of cost of information system, namely Linear, and exponentially Step Function.

5. Cost of information system can occur only once and can also occur continously.
- The cost of information systems that occur only once is ontime cost and development cost that occur during the development of the system.
- The cost of information systems that occur on a continual basis are reccuring cost and operational cost where the cost of this is happened when the information system operates every day.

THE INFORMATION SYSTEM FACTORS

Qualitative factors that lead the performance information system that both of them:

1. Reduce errors

2. Reducing the time to fix errors

3. Reduce the response time from the workstation alternative

4. Accelerate the time of providing information

5. Improve security systems

6. Propagate update records on the source

7. Increasing user satisfaction

THE COMPANY STRATEGY FACTORS

a. Costumer satisfaction

b. Increase sales level

c. Consumer and vendor commitment

d. Product marketing information

SYSTEM PRESENTATION LEARNING

- Conduct a brief presentation
– Deduct detail explain technic

– Specific presentation with visual auxiliary

– If using a model, use auxiliary like laptop so making more informative

– Focus with advantage from information system suggestion with some existing alternative which appropriate with company condition.

CONTINUING THE DECISION OR NOT

– If the company decide to developmney the system, then information department will do next process,its a design process sistem.

– If not, the System Development Life Cycle (SDLC) will be stop.

– Frequently will be found problem with studying system and generally top management will ask to re-working with studying system

– Model will explain some stage part which repeat and sometimes information department will make decision repeating the stage before explain studying system

– With alternative, decision for repeating a SDLC stage previously or not is called Go–No–Go Decision

Reffrence:

Slide PPT Pengamatan Awal, Kebutuhan Analisis; Ngurah Agus Sanjaya ER, S.Kom, M.Kom.