Đang chuẩn bị liên kết để tải về tài liệu:
Lecture Business system development - Lecture 3: Systems Development Life Cycle (SDLC)

In this chapter you will learn: We will continue our discussion on SDLC and will further discuss its phases, we will talk about the object oriented approach for the SDLC, we will also compare different methodologies amongst each other. | Business System Development CSC581 Lecture 3 More on SDLC 2 Summary of the previous lecture In previous lecture we talked about the need for a formal process. We explored different types of SDLC mythologies such as JAD, RAD, eXtreme Programming etc. Outlines We will continue our discussion on SDLC and will further discuss its phases We will talk about the object oriented approach for the SDLC We will also compare different methodologies amongst each other. Objectives To understand and distinguish between different alternatives of SDLC To use the knowledge learnt or real business process development The SDLC Process The process consists of four phases Each phase consists of a series of steps Each phase is documented (deliverables) Phases are executed sequentially, incrementally, iteratively or in some other pattern 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 . | Business System Development CSC581 Lecture 3 More on SDLC 2 Summary of the previous lecture In previous lecture we talked about the need for a formal process. We explored different types of SDLC mythologies such as JAD, RAD, eXtreme Programming etc. Outlines We will continue our discussion on SDLC and will further discuss its phases We will talk about the object oriented approach for the SDLC We will also compare different methodologies amongst each other. Objectives To understand and distinguish between different alternatives of SDLC To use the knowledge learnt or real business process development The SDLC Process The process consists of four phases Each phase consists of a series of steps Each phase is documented (deliverables) Phases are executed sequentially, incrementally, iteratively or in some other pattern 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? 7 SDLC: The Planning Phase Project Initiation Develop/receive a system request Conduct a feasibility analysis Technical feasibility Economic feasibility Organizational feasibility Project Management Develop the work plan Staff the project Monitor & control the project 8 SDLC: The Analysis Phase Develop an analysis strategy Model the current system Formulate the new system Gather the requirements Develop a system concept Create a business model to represent: Business data Business processes Develop a system proposal 9 SDLC: The Design Phase Develop a design strategy Design architecture and interfaces Develop databases and file specifications Develop the program design to specify: What programs to write What each program will do 10 SDLC: The Implementation Phase Construct the system Build it (write the programming code) Test it Install system Train the users Support the system (maintenance) 11 .