Fourth Quiz

PERCEPTION EARLY REQUIREMENT ANALYSE

CONCEPT of INVESTIGATION SYSTEM

This System investigation here is done when there is or there is a gap in the difference (gap) between the purpose of the system and actual system conditions.

Report detect the problem do not really real

– Target too ideal

– Lacking of resource and or attitude

– System measurement less be accurate

– System target of under developed

– Difference of between system of ideal and system of whereas

Problem Solving

– System Formulation which is walk

– Ideal Getting of system consensus

– Developing Some alternative

– Chosening Best alternative

Intention of investigation is to show the problem of which in fact happened.

CONSTRAINTS OF INVESTIGATION SYSTEM

In doing the investigation of some constraint which often emerge is:

– Time

– Expense Of

– Science

– Political

– Interference

RECOMMENDATION

Result from investigation is a recommendation which compose for example:

– Doing conservancy of system

– Do not bring an action against anything,because do not be found by a problem

– Improving the ability or the skills of user

– Consider modifications to the system total

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

INVESTIGATION TACTICS

Tactics of investigation is needed for example:

– Can find all problem

– Knowing cause of problem appearance

– Determining correct solution

Investigation tactics must be done so that all system element can accept offer of solution without bothering their activity.

Some Tactic Can Be Do:

– Listening system user opinion

– Don’t give an early fission

– Comparing system user story about the same case

– Observation about logical inconsistency problem

INVESTIGATION TECHNICS

Direct:

– Questionnaire
– Asking and reply
– Observation

Indirect:

– Procedure flow
– Document studying
– Sample
– Tabular

CURRENT SYSTEM DESCRIPTION

– Input
– Output
– File
– Data element
– Transaction volume and action document
– Data flow diagram

ANALYSIS NEEDS

Intensive interaction step between system analyst and end user, which system development team showing they are skill to get respond and trust of user, so its get a good participation.

Four objective being reachable :

– Explain complete system
– Describe ideal information system
– Bring the ideal information system to the current situation with consider about resources problem.
– Give support to user confidence to a system development

Method

– Asking and reply
– Questionnaire
– Observation
– Analysis procedure
– Document observation

Resources problem

– Time
– Money
– Skill
– Technology
– External factor

Analysis needs document

– 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 bring current system condition close with ideal system condition

– Make an alternative ways to solve information system problem
– The best alternative then use with wise.

Strategy choice

– Distributed versus centralized processing
– Information decision changing from centralized data processing to decentralized end user responsibility center
– Integrated versus dispersed database
– System designer must consider the data, which will be set in database and set in file.
– Surround Strategy of System Development
– Strategy environment is impotant for company take over because the information system from other company might be different with current company.

Tactical choices

Do before operational design choose

Operational design choices

Design choices can ber grouping by

Input:

– Online Vs Off Line Data Entry
– Keyed Vs Machine Readable Data Entry
– Centralized Vs Decentralized Data Entry

Processing:

– Batch Vs Realtime 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

Comparing tactic : the system is compared based on cost and profit according to relative. It is 3 ways the A system can be says “more superior then other system” if:

– A have a lower cost than B, and have same profit

– A have a lower cost than B and higher profit then B

– Both of the system have same cost but A have higher profit than B.

Some method of system compare

– Break Even point Analyisis
– Payback Period
– Discounted PayBack period
– Internal Rate of Return

Cost category

– Hardware
– Software
– People
– Suppliers
– Teleccommunications
– Physical sites

Cost details

Compare system information cost from system life cycle, analysis projected some of cost change for future, and there is three model information system, liner, exponential and step function

System information cost can be once and can be continous

– System information cost, which one time is ontime cost and development cost where occur in system development

– The continous cost, one another is reccuring cost and operational cost, which this cost use for daily system information operate.

SYSTEM INFORMATION FACTOR

Qualitative factor that direct to good system information performance

– Reduce error level

– Reduce time for fix the error

– Reduce response time from alternative workstation

– Accelerate information suppliying time

– Improve system security

– Increase active record source update

– Increase user saticfaction

Company strategy factor

– Costumer satisfaction
– Increase sales level
– Consumer and vendor commitment
– Product marketing information

SYSTEM PRESENTATION LEARNING

– Short 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.

THE DECISION, CONTINUE 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

Refference:

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