Pendahuluan Analisis dan Desain Sistem Informasi

Sherly Christina, S.Kom., M.Kom

Materi

• Definisi Analisis dan Desain Sistem Informasi• System Analyst• Review SDLC

2

Definisi Analisis dan Desain Sistem Informasi

• Systems Analysis and Design is the process

people use to create (automated) information

systems.

3

Definisi Analisis dan Desain Sistem Informasi

• Nama lain:– Software Engineering– Information System Engineering– System Engineering– Information System Engineering

4

Sistem Analyst

• Profesi yang mempelajari permasalahan-

permasalahan dan kebutuhan-kebutuhan

suatu organisasi untuk meningkatkan

performa organisasi tersebut.

5

Keahlian Sistem Analyst

• Agents of change– Identify ways to improve the organization– Motivate & train others

6

Keahlian Sistem Analyst

• Skills needed:– Technical: must understand the technology– Business: must know the business processes– Analytical: must be able to solve problems– Communications: technical & non-technical audiences– Interpersonal: leadership & management– Ethics: deal fairly and protect confidential information

7

Peranan System Analyst

8

Systems Development Life Cycle (SDLC)

Planning

Analysis

Design

Implementation

9

SDLC Process

• Terdiri atas 4 fase

• Tiap fase terdiri atas beberapa langkah

• Tiap fase terdokumentasi

• Tiap fase dapat dieksekusi secara sequentially,

incrementally, iteratively atau dalam pola lain.

10

Questions to be Answered

• Planning phase– Why should we build this system?– What value does it provide?– How long will it take to build?

• Analysis phase– Who will use it?– What should the system do for us?– Where & when will it be used?

• Design phase– How should we build it?

11

SDLC: Fase Planning

1. Project Initiation– Develop/receive a system request– Conduct a feasibility analysis

• Technical feasibility• Economic feasibility• Organizational feasibility

2. Project Management– Develop the work plan– Staff the project– Monitor & control the project

12

SDLC: Fase Analysis

1. Develop an analysis strategy– Model the current system– Formulate the new system

2. Gather the requirements– Develop a system concept– Create a business model to represent:

• Business data• Business processes

3. Develop a system proposal

13

SDLC: Fase Design

1. Develop a design strategy2. Design architecture and interfaces3. Develop databases and file specifications4. Develop the program design to specify:

– What programs to write

– What each program will do

14

SDLC: Fase Implementation

1. Construct the system– Build it (write the programming code)

– Test it

2. Install system– Train the users

3. Support the system (maintenance)

15

SDLC: Metodologi

• Methodology: a formalized approach to implementing the SDLC

• Categories– Process oriented– Data centered– Object-oriented– Structured– Rapid action development– Agile development

16

Kelas-Kelas Metodologi

• Structured Development– Waterfall Development– Parallel Development

• Rapid Application Development– Phased– Prototyping

• Agile Development– eXtreme Programming– SCRUM

17

Perbandingan antar Metodologi

18

Daftar Pustaka

• Dennis, Wixon and Tegarden, Systems analysis and design with UML 4th, 2012 , John Wiley and Sons

• Rosa A. S dan M.Shalahudin, Modul Rekayasa Perangkat Lunak (Terstruktur dan Berorientasi Objek), 2011, Modula

19

20