Quiz Four

INVESTIGATION SYSTEM CONCEPT

There is a system of investigation here also be due to a detection of the problems that the report does not really real, such as:

• Too ideal destination

• Lack of resources and / or attitude

• Measurement system is less accurate

• System that is the purpose behind

• The difference between the ideal system and the system while

Problem solving:

• Decompose the system is running.

• Where is the investigation carried out here in detail

• Getting a consensus that the ideal system

• Developed several alternative

• Selecting the best alternative

The objective of the investigation here is to show that the problem actually occurs.

CONSTRAINTS SYSTEM INVESTIGATION

In making an investigation, there are several problems that often arises, namely:

• Time

• Cost

• Science

• Politics

• Intervention

Recommendation

Result of investigation is a recommendation which is filled with:

• Never take any action

This is mean when there is no problems find in system we can’t take any actions.

• System maintenance

System maintenance needs to maintenance small problems like when job description not runs very well. So we must solve that problem and after we solve it we must maintenance.

• increase ability or user ability

• totally consider to system modification

• put problem into the development system plan

INVESTIGATION TACTICS

Why need some tactic?

• Find all problem

• Knowing its appearance cause problem

• Determining solution in point

Done so all system element can accept solution offer without trouble their activity

Severally tactics which can be done:

• Listening system agent opinion

• Don't give startup resolving

• Comparing story some bodies system agent to same case

• Notice the logical inconsistent problem

INVESTIGATION TECHNICS

Direct:

• Questionnaire

• Asking and reply

• Observation

Indirect:

• Procedure flow

• Document studying

• Sample

• Tabular

CURRENT SYSTEM DESCRIPTION

Determining current system performance will struck a snag if firm have no one performance measurement default system. Too bad, tending firm doesn't update to document walking system. Hence, analyst fix document up to problem investigation system. Current system description covers explanation:

• Inputs

• Outputs

• Files

• data elements

• transaction volume and action document

• data flow diagrams

Analysis Requirement

Intensive interaction stage between systems analyze with end user when team development system show their skill to get some reaction and trust the user until the get good participation.

• Four goal wish to achieve:

• Explain the system completely

• Describe the ideal information system

• Bring the ideal information system at moment with observe the resource constraint

• Give push to user conviction into development system

  • Method:

    • Question and Answer

    • Questioner

    • Observation

    • Current procedure

    • Document monitoring

• Resource constraint

  • Time

  • Cash

  • Skill

  • Technology

  • External factor

    • Document analysis requirement

      • Analysis direction: relationship with the end user, process monitoring, problems in data gathering.

      • User needs: real needs, report needs, exercise needs, and new system influence.

      • System constraint: explain time and cost constraint, skill, technology and external factor.

      • Document kind data gathering instrument, statistic consensus, data flow according to physic and logical, first data element in data dictionary.

Generating Systems Alternatives

How to close the system condition at moment with the ideal condition system?

• create alternative to solve the information system problem

• best alternative to applying accordance with wisely

Strategy selection

• Distributed versus centralized processing

Change information decision from centralized data processing to decentralized end user responsibility center.

• Integrated versus dispersed database

System planner must consider what kind of incoming data to database and incoming to file.

• Surround Strategy of System Development

Environs are important strategy in case overtake company because information system from other company possible different with company at moment.

Selection tactic

Do before operational planner selection started. If we can make some tactic before doing operational planner, we can choose the best tactic to solve the problem.

Operational planner selection

Planner selection is able categorize into:

• Input

  • Online Vs Off Line Data Entry

  • Keyed Vs Machine Readable Data Entry

  • Centralized Vs Decentralized Data Entry

    • Processing

• Batch Vs Real-time record update

• Sequential Vs Direct Access to records

• Single Vs Multiple User update of records

  • Output

    • Traditional Vs Turn Around Documents

    • Structured Vs Inquiry based reports

SELECTING THE PROPER SYSTEM

Tactics compare the : System compared to by pursuant to expense and advantage relatively. There is 3 way of system A told by more pre-eminent with the other system if

• A have the lower expense from B and advantage of both is of equal

• A have the lower expense from B and A yield the advantage which is more than B

• A And B have the expense of is of equal but advantage yielded by A of more amount

Some Method of Compare System

• Break Even point Analyisis

• Payback Period

• Discounted Payback period

• Internal of Rate Of Return

Categories Expense : hardware, software, people, suppliers, telecommunications and physical sites

Expense Detail is comparing expense of information system of passing system life, projection analyst of how many expense change for the future and there is 3 model of expense of information system that is Linear, Eksponensial And Step Function

Expense of information system can just be happened once and earn is also happened chronically.

• Expense of just information system that happened once that is ontime cost and development cost that happened system development moment .

• Expense of information system that happened continually among other things is reccuring cost and also operational cost of where this expense is happened by the moment of information system operate every day.

FACTORS INTO INFORMATION SYSTEM

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

• Reduce errors

• Reduce the time to fix errors

• Reducing the response time from the workstation alternative

• Accelerating the provision of information

• Increase the security system

• Have active update source record

• Increase user satisfaction

FACTORS INTO CORPORATE STRATEGY

• Customer satisfaction

• Sales increased

• Consumer and vendor commitment

• Information marketing products

PRESENTING LEARNING SYSTEM

• Make short presentations

• Reduce the detail description techniques

• Clearly presented with visual aids

• If using a model using a tool such as a laptop so that more informative

• Emphasize the benefits of the proposed system with some alternative information that is appropriate conditions experienced by the company.

CONTINUING DESICION OR NOT

• If the company decided to develop the information system, the department will do next, namely the System Design Process.

• If then the System Development Life Cycle (SDLC) will be terminated.

• Often the problem will be found with the system and the study and top management will usually ask for the re-employment system to study.

• Model will describe some of the stages of the repeated and sometimes the information will make a decision before the repeat stage system of study.

• With the alternative, the decision to repeat a previous stage SDLC or not called Go - No-Go Decision.

Referensi:

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