FIRST OBSERVATION AND ANALYSIS REQUIREMENT
1. CONCEPT OF INVESTIGATION SYSTEM
· Basically investigation system happened because there is a difference between the real condition of system purposes and condition.
· Problem detection report which is not really occur because of;
· The target too ideal.
· Lack of resources and attitude
· Measurement of system is not too accurate.
· Target of system which is not up-to-date.
· Difference between ideal system and temporary system.
· Problem solving:
· Formulation of system which is working à investigation in detail.
· Getting ideal system consensus.
· Developing some alternative
· Choosing the best alternative.
· The purpose of investigation in to show the problem which is really happened.
2. CONSTRAINT IN THE INVESTIGATION SYSTEM
In doing the investigation, we usually faced with some constraint in its applying. The constraints which often emerge in conducting the investigation are:
· The limitation of time
· Limitation of expense
· Sciences
· Political
· Interferences
3 . RECOMMENDATION
we always get result Each time we do investigation, the Result of a investigation that contain, such as:
· Do not take any action à did not found any problem
· Doing system conservancy à small problems
· Improving ability or skill of the user
· Considering total modification system
· Placing the problem that happened into system development plan which is immediately done.
4. TACTIC OF INVESTIGATION
In order to do the investigation, of course we need some certain tactics, the Reason why we need some tactics in investigation are:
· To Find all problem
· knowing the cause of the problems that appear
· To Determine a correct solution
Tactics is also done so that all system elements can accept solution offer without bothering their activity.
5. TECHNIQUE OF INVESTIGATION
Besides tactics, in order to do the investigation, there are 2 techniques that be able to do such as
· Direct Investigation:
· Questioner
· Question and answer
· Perception
· Indirect Investigation:
· Procedural stream
· Document study
· Sample
· Tabular
6. SYSTEM DESCRIPTION IN THIS TIME
· Input
· Output
· File
· Data element
· Transaction volume and action document
· Data flow diagram
7. REQUIREMENT OF ANALYSIS
intensive Interaction phase among system analyst with end user where the system development team show their membership to get comments and trust of the user so that they get good participation.
4 TARGET OF WHICH WISH TO BE REACHED
· Explaining system completely
· Depicting ideal information system
· Bringing ideal information system to condition in this time by paying attention resource constraint
· Giving motivation to confidence the user into the system development
Method
· Questioner
· Question and answer
· Observation
· Document study
· Analysis Procedural
Resources Constraint
· Time
· Money
· Membership
· Technology
· External Factors
Document Requirement of Analysis
· analysis Instruction : Relation with end user, perception of process, problem in order to collecting data
· Requirement of User : Requirement in fact, Requirement of report, requirement of training and new system influence
· System Constraint : Explaining time constraint and expense, membership, technological and factor of external
· Document in the form of data collecting instrument, statistical consensus, data stream by logical and physical, early data element in data dictionary.
8. GENERATING SYSTEMS ALTERNATIVES
How to close up the system condition at this moment to ideal condition system?
· Create alternative to solve the information system problem
· Best alternative will applied accordance with wisely
Strategy selection
· Distributed versus centralized processing
The change of information decision from centralized data processing to decentralized end user responsibility center.
· Integrated versus dispersed database
Designer of system have to consider to any kind of data which enter into database and which come into File
· Surround Strategy of System Development
Environment around the strategy are important in case to overtake company because information system from other company might possible different with company at this moment.
Tactic Selection
Tactic selection have been Done 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 scheme Choice
Scheme choice may able categorize into :
· 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
9. SELECTING PROPER SYSTEM
Equal tactic: equivalent system based on cost and profit relatively. There is 3 system, A called more excellent between other system if:
· Have low cost then B and their profit same.
· A have low cost then B and A produce profit more than B.
· A and B have same cost but produce of profit A more than B.
Several comparative method systems
· Break Even point analysis
· Payback period
· Discounted payback period
· Internal rate of return
Cost category
· Hardware
· Software
· People
· Suppliers
· Telecommunications
· Physical sites
Cost details
Equal system information cost by means of life system, analyst projection several cost change for future and 3 cost model information system that is Linear, Exponential and Step Function.
Information system cost happen in one time and be able happen continuously.
· Information system cost happening in one time that is on-time cost and development cost while system development consist.
· Information system cost happening continuous there are recurring cost with operational cost while cost happen at information system operated every day.
10. FACTOR OF INFORMATION SYSTEM
Qualitative factor direct to best information system there are:
· reduce mistake state
· reduce time to solve mistake
· reduce perceptive time from alternative workstation
· increase time to supplying information
· raise system security
· increase update from active record
· raise user satisfied
Company Strategy Factor
· User satisfied
· Improvement of selling state
· Commitment between consumer and vendor
· Information product marketing
1 11. PRESENTATING STUDY OF SYSTEM
· Do shortly presentation
· reduce details clarification technique
· represented clearly with visual tools
· if use model, use tools like laptop to make more informative
· Emphasizing advantage of proposal of information system with some alternative with company condition
12. DECISION TO CONTINUE OR NOT
· If company set mind to develop system so hereinafter information department will process, that is Process of Design System
· If on the contrary so System Development Life Cycle ( SDLC) will be discontinued
· Frequently, the problem will be found with learn system and usually top management will ask to reworking for learn system
· A model will explain some part of step that is repeated and sometime information department will make a decision to repeat step before explaining learn system
· With alternative, decision to repeat a step of previous SDLC or not called Go – No – Go Decision
