急急...關於System Development Life Cycle

So many text and cannot post both of them. Pls check the refer link.

1.
The systems development life cycle (SDLC) is a conceptual model used in project management that describes the stages involved in an information system development project....

http://searchsoftwarequality.techtarget.com/sDefinition/0,,sid92_gci755068,00.html

2.
System development life cycle is a model on how to bring an idea to reality when regarding systems, even though it probably could be used in other industries as well, because other industries...

http://www.his.se/upload/32968/inl2_gr3.pdf

3.
A preliminary investigation (PI) is a brief study of a potential project to estimate whether a detailed investigation is justified...

http://www.info.usda.gov/CED/ftp/CED/neh630-ch03.pdf

Systems analysis is the interdisciplinary part of science, dealing with analysis of sets of interacting or entities, the systems, often prior to their automation as computer systems, and the interactions within those systems...

http://en.wikipedia.org/wiki/Systems_analysis

Systems design is the process or art of defining the architecture, components, modules, interfaces, and data for a system to satisfy specified requirements...

http://en.wikipedia.org/wiki/Systems_design

The Development Phase is in many ways the most exciting time of the SDLC. During this phase, computer hardware is purchased and the software is developed...

http://www.johnsmiley.com/mybooks/1902745035/appendixc.htm

During the Implementation phase, both hardware and software is tested. Although the programmer will find and fix many problems...

http://www.johnsmiley.com/mybooks/1902745035/appendixc.htm



OK?

1. SDLC is a systematic approach to solving business problems.


sorry, i just know the first question.