Presentation on theme: "ANALISIS dan PERANCANGAN SISTEM (INFORMASI) Catur Iswahyudi, S.Kom, S.E Department of Informatics Engineering Institute of Science."— Presentation transcript:
ANALISIS dan PERANCANGAN SISTEM (INFORMASI) Catur Iswahyudi, S.Kom, S.E Department of Informatics Engineering Institute of Science and Technology AKPRIND Yogyakarta
Gambaran Umum Tujuan : Agar mahasiswa mengerti dan mampu menggunakan teknik-teknik serta perangkat untuk analisis, perancangan, dan pemodelan sistem. Kompetensi : Mampu mengimplementasikan Analisis & Perancangan Sistem menggunakan alat bantu perangkat lunak Prasyarat : Sistem Informasi (TIFS 1407) Penunjang : Prakt. Analisis & Perancangan Sistem Tools : Easy CASE Microsoft Access Microsoft Visio Microsoft Project
MATERI 1.Pendahuluan : Kontrak Pembelajaran, RPP 2.Konsep Dasar Sistem 3.Analisis Sistem 4.Siklus Hidup Sistem 5.Perancangan Sistem Secara Umum 6.Pendekatan Perancangan Terstruktur 7.Pemodelan Sistem (DFD) 8.Flowchart 9.Perancangan Sistem Terinci (Output dan Input) 10.Perancangan Sistem Terinci (Basisdata) 11.Pengujian dan Jaminan Kualitas Sistem 12.Manajemen pengembangan sistem 13.Study Kasus
Kalau diringkas 1.Perencanaan sistem (System Planning) 2.Analisis Sistem (System Analysis) 3.Perancangan Sistem (System Design) 4.Implementasi Sistem (System Implementation) 5.Pendukung sistem dan Keamanan (System Support and Security)
PUSTAKA Kenneth E. Kendall dan Julie E. Kendall, System Analysis and Design 8 th Edition, Pearson Education Ltd, 2011 (printed only) Gary B. Shelly dan Harry J. Rosenblatt, System Analysis and Design 8 th Edition, Course Technology, 2010 (ebook available) Arthur M. Langer, Analysis and Design of Information Systems 3 rd Edition, Springer-Verlag London Limited, 2008 (ebook available) Jeffrey L. Whitten dan Lonnie D. Bentley, Systems Analysis and Design Methods 7 th Edition, McGraw- Hill Irwin, 2007 (ebook available)
Penilaian Acuan Patokan Skor Nilai Akhir : Dasar : SK No. 073/Skep/Rek/2008, tanggal 20 Peb 2008 NA = 0,5*Tugas+0,2*UTS+0,2*UAS+0,1*Hadir A NA = 80 – 100 B NA = 60 – 79 C NA = 40 – 59 D NA = 20 – 39 E NA =
1-7 IS and IT An information system (IS) is an arrangement of people, data, processes, and information technology that interact to collect, process, store, and provide as output the information needed to support an organization. Information technology is a contemporary term that describes the combination of computer technology (hardware and software) with telecommunications technology (data, image, and voice networks).
9 Project Planning System Analysis System Design Construction/Implementation Integration and Testing Installation Operation & Maintenance Systems Development Life Cycle (SDLC) Testing
10 Project Planning Put project in context Small part of a much larger system? New system or modify old? System Analysis Define user requirements Analyze tasks Develop specifications System Design - Define the system to be built Logical design Physical design SDLC Phases
11 Construction Write (or buy) the code Integration and Testing Unit testing, system testing, acceptance testing Installation Testing, training, conversion Operations & Maintenance Put into production Fix bugs, add facilities SDLC Phases (continued)
Generic Life Cycle Models The Waterfall Model Prototyping Iterative and Incremental Development The Unified Process Life Cycle
Waterfall Life Cycle Requirements specification Functional specification Acceptance test specifications Unit test report Sub-system test report System test report Acceptance test report Completed system Software architecture specification System test specification Design specification Sub-system test specification Unit test specification Change requests Change request report
TLC ( traditional life cycle ) with Iteration The cost of this form of iteration increases as the project progresses making it impractical and not effective
Problems with TLC Real projects rarely follow such a simple sequential life cycle Lapsed time between systems engineering and the final installation is long Iterations are almost inevitable in real projects but are expensive & problematic with the TLC Unresponsive to changes during project as iteration is difficult Therefore, this model is only appropriate when the requirements are well-understood
Strengths of TLC Provide a very structured way to system development Tasks in phases may be assigned to specialized teams. Project progress evaluated at the end of each phase, and assessment made as to whether the project should proceed
Prototyping Life Cycle Not intended to deliver the final working system Quickly built up to explore some aspects of the system May be used as part of other iterative life cycle
Prototyping – Advantages Early demonstrations of system functionality help identify any misunderstandings between developer and client Client requirements that have been missed are identified Difficulties in the interface can be identified The feasibility and usefulness of the system can be tested, even though, by its very nature, the prototype is incomplete
Prototyping – Problems: The client may perceive the prototype as part of the final system The prototype may divert attention from functional to solely interface issues Prototyping requires significant user involvement Managing the prototyping life cycle requires careful decision making
The Spiral Model (Boehm, 1988) Incremental Development
Iterative problem solving: repeats activities, each can be viewed as a mini-project Incremental delivery, either external or internal release New release = new functionality + (improved) previous release Several approaches to structuring iterations Define and implement the key system functions Focus on one subsystem at a time Define by complexity or risk of certain components
The Unified Process System Development Life Cycle Unified Process Life Cycle
Captures many elements of best practice The phases are: Inception is concerned with determining the scope and purpose of the project; Elaboration focuses requirements capture and determining the structure of the system; Construction's main aim is to build the software system; Transition deals with product installation and rollout.
Predictive versus adaptive approaches to the SDLC Choose Appropriate Life Cycle TCL is highly predictive Prototyping, Spiral and UP life cycle models are highly adaptive
28 Problem Biaya (Kasus Gunung Es)
29 Distribusi Usaha Pengembangan Sistem
30 Problem Kesalahpahaman
1-31 System Designers and System Builders System designer – a technical specialist who translates system users’ business requirements and constraints into technical solution. She or he designs the computer databases, inputs, outputs, screens, networks, and software that will meet the system users’ requirements. System builders – a technical specialist who constructs information systems and components based on the design specifications generated by the system designers.
1-32 Systems Analysts Systems analyst – a specialist who studies the problems and needs of an organization to determine how people, data, processes, and information technology can best accomplish improvements for the business. A programmer/analyst includes the responsibilities of both the computer programmer and the systems analyst. A business analyst focuses on only the non-technical aspects of systems analysis and design.
1-33 Where Do Systems Analysts Work?
1-34 Skills Needed by the Systems Analyst Working knowledge of information technology Computer programming experience and expertise General business knowledge General problem-solving skills Good interpersonal communication skills Good interpersonal relations skills Flexibility and adaptability Character and ethics
1-35 The Systems Analyst as a Facilitator
Ringkasan Metode Pengembangan Sistem Case tools
Metode Pengemban gan Sistem
Object Oriented Analysis
Agile Methods agile=lincah, quick, easy
CASE tools UML-Unified Modelling Language IBMS-Information Base Modelling System IDE-Integrated Development Tools Individual tools Modelling tools Documentation tools Engineering tools Construction tols (apps gen, screen gen, report gen)
Contoh Visible Analyst – Visible system System Architect – Telelogic IBM company Rational Software - IBM