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Lecture 7

ISA 387 Lecture Notes - Lecture 7: Feasibility Study, Function Point, System Request

2 pages55 viewsFall 2015

Department
Information Systems & Analytics
Course Code
ISA 387
Professor
Havelka Douglas
Lecture
7

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SYSTEMS DEVELOPMENT LIFE CYCLE (SDLC) HANDOUT
ISA387 – MIAMI UNIVERSITY – HAVELKA
THE SYSTEMS DEVELOPMENT LIFE CYCLE (SDLC)
The systems development life cycle (SDLC) is a model of the processes typically used by
IS professionals when developing computer-based information systems applications. The
SDLC has been described in many ways by different experts; however, it is usually
represented as a series of phases that include related activities. These activities build upon
one another and are performed as more detailed information is gathered about a system
and more work is performed to move a project from an idea to an implemented system.
Usually IS development is done in an iterative and project-oriented environment.
One of the simplest versions of the SDLC is composed of five phases: planning, analysis,
design, implementation, and support. These phases are described below. It should be
noted that the support phase may not be considered part of the “development” life cycle,
but is normally included to complete the natural cycle that an IS goes through.
PLANNING
The planning phase consists of activities that are required to initiate, evaluate, plan, and
obtain approval for the project. The main activities in the project planning phase are:
Activities Tools/deliverables
Define the problem
Confirm project feasibility
Produce the project schedule
Staff the project
Launch the project
System request
System proposal
Feasibility study
Function point analysis
ANALYSIS
The analysis phase consists of activities that are required to identify and prioritize the
business needs and to develop requirements of the new system. The activities involved in
this phase are:
Activities Tools/deliverables
Gather information
Define system requirements
Build prototypes for discovery of
requirements
Prioritize requirements
Generate and evaluate alternatives
Review recommendations with
management
CASE Tools (Visio, etc.)
UML
Use case diagram / descriptions
Sequence diagrams
Class diagrams
Structured Techniques
Dataflow diagrams
Entity-relationship diagrams
Data Structure Definition (generic)
DESIGN
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