OBSERVATION START, NEEDS ANALYSIS

INVESTIGATION SYSTEM CONCEPT
•Gaps differences (gaps) between the purpose of the system and actual system conditions.
•Reports detection problem is not really real: Destination is too ideal, and the lack of resources or attitudes, less accurate measurement system, a system already Purpose behind, The difference between the system and the system ideal while.
•Problem solving: Under the system that is running: a detailed investigation, Obtaining consensus that the ideal system, some alternative Developing, Selecting the best alternative.
•The goal is the investigation indicates the problem actually occurs.

CONSTRAINTS SYSTEM IN INVESTIGATION
In doing some investigation, the constraints that often appears is the time, cost, knowledge, political interference.

RECOMMENDATIONS
Results of the investigation is a recommendation that includes among others the following: Not to take any action -> not found any problems, Conducting system maintenance -> problems that small, capacity or skills of the user, modifications Consider the total system, Putting the problem to occur in development plan system is immediately done.

TRICK INVESTIGATION
•Required for Trick: Find all of the issues, Knowing the causes of the emergence of problems, Determining the right solution.
•Done so that all elements of the system can receive a quote a solution without disrupting their activities.
•Some of the tactics that can be done include: Listen to opinions of the system, Do not give the early breakthrough, Comparing the story of some people against the system the same case, the problem Note logical inconsistencies.

ENGINEERING INVESTIGATION
Can be done in two ways, namely: Direct (questionnaire, FAQ's, Observations), No Direct (Flow procedure, Learning documents, sample, Tabular).

WHEN THIS SYSTEM DESCRIPTION
Input, Output, File, Data Elements, Volume Transaction and document actions, data flow diagram.

NEEDS ANALYSIS
•Goals to be achieved: Explaining the complete system, describes the ideal information systems, information systems Bringing the ideal conditions at this time to pay attention to the constraints of resources, to give impetus to the confidence in the development of this system.
•Method: Interview,question fill, Observation, analysis procedure, Observation document.
•Constraints of resources: time, money, expertise, technology, External Factors.
•Document the needs analysis: analysis of referrals (Relationships with end users, the observation process, problems in data collection), Needs user (actual requirements, reporting requirements, training needs and the influence of the new system), system constraints (Explain the cost and time constraints, expertise, technology and external factors), the form document data collection instruments, statistical consensus, the logical flow of data and the physical, data elements in the initial 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 systems, best alternative is applied wisely.
•Options Strategies: Distributed versus centralized processing; Changes centralized decision-making information from 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 System of Strategy Development, Environmental around important strategy in the case of company takeovers because the information system of other companies may vary with the company at this time.
•Options Trick : Selection is done before the design operational
•Designing Operational Options
Options can be grouped into the design: 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 Users update of records. Output; Traditional Vs Turn Around Documents, Structured Vs Inquiry-based reports.

SELECTING THE PROPER SYSTEM
•Trick compare
System based on the comparison of costs and benefits relative. There are 3 ways a system said the system is superior to the other if: A has a lower cost of the benefit of both B and the same, have a cost lower than a B and a profit of more than B, A and B have the same cost advantage produced a lot more.
•Some Comparasi System Method: Break Even point Analyisis, Payback Period, discounted payback period, Internal Rate of Return
•Cost categories: Hardware, Software, People, Suppliers, Telecommunications, Physical sites
•Cost Details
Comparing the cost of information systems through the life of the system, analysts give a description how the cost changes for the future and there are 3 models cost information system, namely Linear, and exponentially Step Function
•The cost of information system can occur only once and can also occur on an ongoing basis. Cost information system that occur only once the cost on time and development costs that occur during the development of the system. Cost information system that occur continuously among recuring cost and operational cost where the cost of this is the case when the operating system information every day.

FACTORS INTO INFORMATION SYSTEM
Qualitative factors that lead the performance of a good information system are: Reducing the level of error, Reducing the time to fix the error, Reducing the response time from the workstation alternatives, Accelerating the provision of information, Improving the security system, have update the source record is active, the user satisfaction Increase

FACTORS INTO CORPORATE STRATEGY
Customer satisfaction, increased sales Level, Commitment, and consumer vendor, product marketing information

PRESENTING LEARNING SYSTEM
Make short presentations, Reducing the technical detail explanation, Presenting clearly with visual aids, using a model If the tools used 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 DECISION 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