Third Quiz

1.Importance of developing an information system caused by Existence of problems of arising out in system, old ones like, which do not all right in Organizational Growth System, To reach for the opportunities, Existence of directives

2. Purpose or goal of developing an information system

- Solving problems

- Reach for the opportunity : In a state of market compete the speed of information or time efficiency very determining success or failure of strategy and plans which have been made arrangements for to reach for the existing opportunity.

- Fulfilling given instruction : New system compilation earn is also happened by caused by its is instruction of is from the top of head and or organizational from outside.

3. Organization’s expectations after implementing an information system

- Performance. Improvement to new system performance. so that become more effective

- Information, improvement to presented information quality

- Economy, Improvement to benefit or advantage or decreasing cost that happened

- Control, improvement to operation to detect and improve repair the mistake and also insincerity which and will be the happened

- Efficiency, improvement to efficiency for the operate

- Services, improvement to service given by system

4. Principles of developing an information system

1. System Developed is to menajemen

2. System Developed by is big capital invesment : all existing alternative have to investment

good invesment have to be valuable

3. System Developed need one who educated

4. Step Work and duties which must be conducted in course of development system

5. Process The development system do of note of have to massage

6. Don'T Fear to cancel the project

7. Documentation There must be for the guidance of in development system.

5. Explaining at least three system development life cycle models

Model of Waterfall

Requirements give service, definition, and system target determining to through consultancy with system user. Last go to design which is process scheme of system divide conditions in hardware system and its peripheral of him of Implementation which design software realized as with refer toing program entangling verification that each;every unit have fulfilled its specification. Afterwards to verification represent program unit and tested as complete system to guarantee that conditions of system have been fulfilled. After examination of system, software sent to User. Last to maintenance represent cycle phase which at longest. Conservancy include cover correction and various error which do not be found by at previous phases, repair of system unit implementation and development of service of system.

Model of Iterasi

Initial Planning represent planning early. Then go to requirements represent compiler of requirement completely is later;then analysed and defined by requirement which must fulfill by program to be woke up. This phase have to be done completely to be able to yield complete desain. And design Analysis do desain after requirement have been collected by lengkap.Implementation program desain translated into codes by using Ianguage of pemrograman which have been determined. direct woke up program tested by either through unit. Deployment conducting spreading. Last of testing representing federating of program units is later then tested as a whole. Afterwards evaluation to evaluate program .

Model of Spiral

Determine determine the intention of determined phase. Strategy alternative have been prepared pursuant to risks knew, and have been planned. Going to Identify risks resolve and each every risk analysed in detail at this sector, for example making prototype to know to incompatibility of requirement. Going to Development test and , after risk evaluation, hence system development model selected, for example if risk of user dominant interface, hence making User Interface prototype. Going to Plan iteration next the of is Project of evaluated or ditinjau-ulang and set mind on to continue to phase of loop hereinafter or do not. If continuing to next phase of plan for loop hereinafter.

6. Explaining approaches of developing a system

1. Classical approach fight against the structured approach

Classical approach emphasize that development system will succeed if/when following phase in systems life cycle. Structure approach try to provide to additional analysis system of appliance and technique for the development of system beside remain to follow the idea from systems life cycle

2. Piecemeal approach fight against the systems approach

Piecemeal approach, selected application or activity, developed by regardless of its position in system information or regardless of target of[is overall of organization. Systems Approach paying attention to system information as one integrated union to each activity or its application emphasizing at goal achievement of entirety from organization

3. Buttom-up approachfight against the top-down approach

Bottom-up Approach started from requirement formulation to handle the transaction and climb the level for by formulating information requirement of pursuant to the transaction. Top-down Approach started by identifying organizational wisdom and target is hereinafter conducted by analysis of information requirement, hence process to descend to transaction process

4. Total-system approach fight against the modular approach

Total-system Approach represent the approach developing system at a time by totally. approach try to solve the complicated system become the some part so that system will be more is easy to comprehended and developed.

5. Great loop approach fight against the evolutionary approach

Great Loop approach apply the change totally at a time use the sophisticated technology. Evolutionary Approach cause the invesment do not too costly and can keep abreast of the technology which quickly, so that technology used do not quickly become worn out.

7. Explaining the meaning of methodology, method and algorithm

- Methodologies is method union, procedure, work concepts, order and postulate used by a science, artistic or the other discipline.

- Algorithm is procedure sequence for the trouble-shooting of this.

- Method is a way of systematic technique to do something.

8. Explaining the three classifications of development methodology

1. Functional Decomposition methodologies

This methodologies emphasize at the resolving from system into smaller subsistem-subsistem, so that will be more easy to to be comprehended, designed and applied

2. Data of Oriented methodologies

This methodologies emphasize at the characteristic from data to be processed. This methodologies is grouped by into two class that is data of flow oriented methodologies and data of structure oriented methodologies

3. Presciptive Methodologies

- ISDOS

Automatization Usefulness process the development of system information. ISDOS have two component that is PSL ( a Ianguage to note the wearer requirement in the form of machine-readable) and PSA ( software packet which loo like with the data dictionary used to check the data included kept and analysed to be yielded by as output report)

- PLEXSYS

Usefulness to [do/conduct] the transpormasi of a high level statemen Ianguage computer to a executable code to a[n wanted hardware configuraton.

- PRIDE

Representing a[n better inwrought software for the analyst of designed by system structure, menajemen data, menajemen of project and documentation.

- SDM / 70

Representing a[n software contain with the method corps, estimate the, documentasi and guide of administration gunba assist the wearer to develop and take care of the effective system.

- SPECTRUM

Representing metodelogi of development system that is SII ( Spectrum International. Inc.)

- SRES And SREM

SRES of wearer Requirement expressed in RSL (requirement statement language). Definition RSL later then can be analysed by using REVS ( requirement engineering and validation system). Methodologies constitutoing software in mentioning SREM ( software requirement engineering merthodologi)

9. Mentioning tools for developing a system

Appliance of Development system which is the in form of graph

a. HIPO Diagram, used as by methodologies of HIPO and the other methodologies

b. Data of Flow diagram, used in methodologies of structured systems analylis and design

c. Structured Chat, used in methodologies of systems analysis and design

d. SADT Diagram, used in methodologies SADT

e. Warnier / orr diagram, used in methodologies Warnier / orr

f. Jakson's Diagram, used incmethodologies of Jackson system development

Appliance of Development system which is the in form of schema

1. activity charting : depicting activity

a. systems flowchart

b. program the flowchart: program the logic flowchart, detailed computer program the flowchart

c. paperwork flowchart

d. database of relationship flowchart

e. process flowchart

f. gantt chart

2. layout charting

3. personal relationship chartin : depicting personnel relation

a. working distribution chart

b. organization chart

10. Explaining techniques used in developing a system

a. technique of menajemen project, that is CPM ( critical path method ) and PERT

(program the evaluation and review technique). This technique [is] used for schedulling project

b. fact finding techniques that is technique which can be used to collect the data and find the fact in activity learn the existing system. Between interview, observation, questionnaires, sampling

c. cost effectiveness analysis or cost benefit analysis

d. technique to run the close

e. inspection technique / walkthrough

11. Explaining the differences of being a system analyst and a programmer

System Analyst	Programmer
- Responsibility of system analyst of at making program and system as a whole. - Broader system analyst knowledge at computer technology and at application area handled. - Work of system analyst in making program limited to trouble-shooting of secra outline. - Work of system analyst entangle the many people relation.	- Responsibility pemrogrammer limited to computer program making. - Rrogrammer knowledge limited to computer technology, computer system, utililies, needed programming language. - Technical programmer work in character and have to quickly in making intruksi-intruksi the program . - Programmer work do not concerning relation with many people.

Knowledge a system analyst should posses:

1. Knowledge and membership of about technological data processing technique of computer and programmer computer

2. Knowledge of about business in general

3. Knowledge about quantitative method

4. Trouble-Shooting membership

5. Communications membership usher the personnel

6. Membership construct the relation usher personnel

Refference :

Jeffrey L. Whitten, Lonnie D. Bentlev, Thomas I.M. Ho, Systems Analysis & Design Methods, (St. Louis: Times Mirror/Mosby College Publishing, 1986), chapter. 107-113.

Ibid, chapter. 117-123.

Lihat Wilkinson, Accounting and Information Systems, (New York: John Wiley & Sons, 1982), chapter. 547-549.

A.Ziyas Aktas, Op. cit., chapter. 132-133, 155-157.

Sommerville, Ian. Software Engineering. 6th. Addison Wesley. 2001.