Early Watch, Analysist Requirement

SYSTEM CONCEPT INVESTIGATES
Difference distinctive (gap) among system aim and condition of system actually
Reporting detects problem not quite a reality

• The distance over ideal
• Lack of resource and or attitude
• System measurement less accurate
• System’s distance is already be left out
• The difference among ideal system and temporary system

Problem solving:

• System formulation that be walks –>detail investigation
• Getting ideal system consensus
• Develop severally alternative
• Choosing the best alternative

Investigation destination –>pointing out problem that actually happens
In do investigation there is some constraint which often emerges:

• Time
• Cost
• Knowledge
• Politics
• Interference

RECOMMENDATION
Result of investigation is one recommendation which contain for example as follows:

• Don’t take action whatever –> problem undiscovered
• Doing system preserve –> little problem
• Increasing ability or user skill
• Regarding system modification totally
• Placing happening problem into systems developmental plan which shortly be done

TACTICS INVESTIGATES
Why needs tactics?

• 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
• inconsistent ion logical problem looking at

Directly:

• Quezioner
• Question-answer
• Watch

Indirect:

• Procedural flow
• Studying document
• Tabular sample

CURRENT SYSTEM DESCRIPTION

• Entry
• Output
• File
• Data element
• Transactions volume and action document
• Data flow chart

ANALYZE REQUIREMENT
Intensive interaction phase among system analyst with end user where systems developmental team point out its membership to get comment and user trust so gets good participation.

4 AIMS THAT WANT TO BE REACHED:

• Explain comprehensive system
• Figuring ideal information system
• Taking in ideal information system to condition of currently by notices resource constraint
• Giving push to wearing confidence into developmental system

Method

• Question-answer
• Questioner
• Observation
• analyze procedure
• Document watch

RESOURCE CONSTRAINT

• Time
• Money
• Membership
• Technology
• External factor

Document is analyst the need

• analyst instruction: Relationship with end user, watch processes, about problem in data collecting
• Wearing requirement: Real requirement, Write-up requirement, training requirement and new system influence
• System constraint: Wording time and cost constraint, membership, technology and external factor
• Document as instrumental as data collecting, statistical consensus, ala data flow logical and physical, early data element in lexical data.

GENERATING SYSTEMS ALTERNATIVES
How to approach current system condition with condition of system which ideal?

• Making alternative to solve information system problem
• That best alternative is applied one expedient

Strategy option

• distributed versus centralized processing , Changing information decision from centralized processing’s data goes to decentralized end user responsibility center
• Integrated versus dispersed is database, System designer shall regard data any kind ingoing in base’s data and one turns in at File
• Surround Strategy of System Development, Environmentally surrounding strategy is of important in term confiscation because information system of other firm may in contrast to corporate currently.

Tactics option
Done before operational scheme option

Operational scheme option
Scheme option can be agglomerated into
Input

• Online Off-line Vs Entry Data
• keyed Vs Machine Readable is Entry Data
• Centralized Vs Decentralized is Entry Data

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 compares: System than bases cost and gain relatively; There is 3 A’s system trick is said more superior with another system if:

• A have inferior cost of B and gain both with
• A have inferior cost of B and A result more gain a lot of B
• A and B have cost with but resulting gain A more A lot of.

Severally Comparative System Method

• Break Even point Analysis
• Payback Period
• Discounted Payback period Rate of Return

• Cost Category
• Hardware
• Software
• People
• Suppliers
• Telecommunications
• Physical sites

Cost detail
Comparing information system cost via system life, to projection analyst gets what change cost for the future and there is 3 information system cost models which is Linear, Exponential and Step Function
Information system cost can happen really just and gets too happening chronically.

• Happening information system cost once just which is on time cost and development cost what do happen while system development.
• Happening information system cost continually among those is recurring cost and operational cost where this cost happens while operating information system every day.

INFORMATION SYSTEM FACTOR
Qualitative factor that aim good information system performance among those

• Reducing fault zoom
• Reducing time to fix fault
• Reducing response time from workstation alternative
• Hastening serve time information
• Increasing system security
• Increasing record’s source update active
• Increasing wearing satisfaction

CORPORATE STRATEGY FACTOR

• Consumer satisfaction
• Sell zoom increases
• Consumer commitment and vendor
• Product marketing information

HOW TO PRESENT SYSTEM LEARNING

• Doing presentation in few words
• Reducing tech explanation with detail
• Present clearly with visual tool
• If utilizes model to utilize assistive tool e.g. laptop so more informative
• Emphasize gain of information system proposal with severally alternative whatever available appropriate condition which experienced by firm.

DECISION DRAWNS OUT OR NOT

• If firm decides to develop system therefore information department will do succeeding process which is System Design Process.

• If contrariwise therefore System Development Life Cycle (SDLC) will be discontinued.
• Oft will find problem with study’s system and usually top management will ask for to do its reworking to study’s system.
• Model will explain some part step which looped sometimes information department will make loop decision step before word study’s system.

With alternative, decision for looping one SDLC’S step in advance or not been called Go – No. –Go Decision.