03-mi2073-daur hidup pengembangan sistem
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System Development Life Cycle (SDLC)MI2073 Analisis dan Perancangan Sistem Informasi Semester Ganjil 2013 2014
Pengajar : Umar Al Faruq (UMA) [email protected]
Slide dibuat oleh : Inne Gartina Husein (INE) [email protected]
Hanya dipergunakan untuk kepentingan pengajaran di lingkungan Politeknik Telkom
KompetensiMemahami Pengertian dan tahapan SDLCMenguasai Model-model Pengembangan Sistem, dan menguasai perbedaan antara model-model tersebut2Systems Development Life Cycle (SDLC)Traditional methodology for developing, maintaining, and replacing information systemsPhases in SDLC:PlanningAnalysisDesignImplementationMaintenance/perbaikan3
SDLC Planning PhaseIdentify, analyze, prioritize, and arrange IS needs
SDLC Analysis PhaseStudy and structure system requirements
SDLC Design PhaseConvert recommended solution to system specificationsLogical design: functional features described independently of computer platformPhysical design: logical specifications transformed to technology-specific details
SDLC Implementation PhaseCode, test, install, and support the information system
SDLC Maintenance PhaseSystematically repair and improve the information systemTraditional Waterfall SDLCOne phase begins when another completes, little backtracking and looping
Problems with Waterfall ApproachSystem requirements locked in after being determined (can't change)Limited user involvement (only in requirements phase)Too much focus on milestone deadlines of SDLC phases to the detriment of sound development practices
Alternatives to Traditional Waterfall SDLCCASE toolsJoint Application Design (JAD)eXtreme ProgrammingRapid Application Development (RAD)Model Linear Sequential Model PrototypingModel IncrementalModel Spiral
CASE ToolsComputer-Aided Software EngineeringSoftware tools providing automated support for systems developmentProject dictionary/workbook: system description and specificationsDiagramming toolsExample products: Oracle Designer, Rational RoseJoint Application Design (JAD)Structured process involving users, analysts, and managersSeveral-day intensive workgroup sessionsPurpose: to specify or review system requirementseXtreme ProgrammingShort, incremental development cyclesAutomated testsTwo-person programming teamsCoding and testing operate togetherAdvantages:Communication between developersHigh level of productivityHigh-quality code15Rapid Application Development (Pressman)Model RAD : adaptasi tingkat tinggi dari model Linear Sequential, sehingga tercapai pengembangan cepat/rapid yaitu 60-90 hari, dengan mengg pendekatan berbasis komponen.
Linear Sequential ModelTahapannya dipersingkat, tanpa implementasiCocok untuk pengembangan sistem / aplikasi dengan tanpa mengindahkan bagaimana implementasi di perusahaan16
17Model PrototypingModel nyata yang memamerkan sebagian produk final yang sama behavior nya.Pada SDLC, prototyping ditempatkan pada phase analisis (kebthn user) atau pada phase khusus.Model prototipe sangat berguna agar menghindari misconcept, sebelum produk final dibuat.Contoh : Sebuah supermarket ingin mengimplementasikan sistem dimana pelanggan dpt membeli barang dng cara debit langsung dari bank. Prototipe utk sistem tsb adalah melakukan simulasi transaksi antar ATM Point of Sale (POS) equipment.
Increment (Tambahan) ModelCocok bagi pengembangan sistem dengan deliverable lebih dari satu18
Model SpiralModel spiral : pendekatan realistis dlm pengembangan sistem skala besar.Lingkaran pertama : analisisLingkaran kedua : desainDan seterusnya19
Contoh penerapan SDLC pada pengembangan sistem*menonton film*Daftar PustakaHoffer. (2005). Modern Analysis and Design Method. Prentice Hall. New York.Pressman, Roger S. (2010). Software Engineering : A Practitioner Approach. McGraw Hill.
Businessmodeling
Datamodeling
ProcessModeling
Applicationgeneration
Testing &turnover
Team #1
Businessmodeling
Datamodeling
ProcessModeling
Applicationgeneration
Testing &turnover
Team #2
Businessmodeling
Datamodeling
ProcessModeling
Applicationgeneration
Testing &turnover
Team #3
Analysis
Desain
Code
Test
System / information engineering
Listen to customer
Build/ revise mock-up
Customer test-drives mock-up
Analysis
Desain
Code
Test
System / information engineering
Analysis
Desain
Code
Test
Analysis
Desain
Code
Test
Deliverable of increment 1
Deliverable of increment 2
Deliverable of increment 3
Planning
Risk analysis
Engineering
Construction & release
Cusomerevaluation
Customercommunication