The waterfall model is a sequential design process for software engineering projects consisting of conception, initiation, analysis, design, construction, testing, production, and maintenance phases. It works best when requirements are stable, the project is small, the environment is stable, and trained resources are available. Key advantages include adapting team shifts, forcing structured organizations, and allowing for early design changes, while disadvantages are nonadaptive design constraints, ignoring mid-process feedback, and delayed testing.

1. WATERFALL MODEL
CREATED BY
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2. •WATERFALL MODEL IN SOFTWARE
ENGINEERING :
THE WATERFALL MODEL IS A SEQUENTIAL
DESIGN PROCESS IN WHICH PROGRESS IS SEEN AS
FLOWING STEADILY DOWNWARDS (LIKE A WATERFALL)
THROUGH THE PHASES OF CONCEPTION, INITIATION,
ANALYSIS, DESIGN, CONSTRUCTION, TESTING,
PRODUCTION/IMPLEMENTATION AND MAINTENANCE.

3. • SDLC WATERFALL IS USED ,WHEN:
1. REQUIREMENTS ARE STABLE AND NOT CHANGED
FREQUENTLY.
2.AN APPLICATION IS SMALL.
3. THE ENVIRONMENT IS STABLE.
4.RESOURCES ARE SMALL TRAINED AND AVAILABLE.

4. ADVANTAGES:
IT IS MAINLY BENEFICIAL FOR LARGER PROJECTS AND ORGANIZATIONS THAT REQUIRE
THE STRINGENT STAGES AND DEADLINES AVAILABLE WITHIN THESE WATERS.
1. ADAPTS OF SHIFTING TEAMS
2. FORCES STRUCTURED ORGANIZATIONS
3. ALLOWS FOR EARLY DESIGN CHANGES

5. DISADVANTAGES:
1.NONADAPTIVE DESIGN CONSTRAINTS: ITS BIGGEST FALLBACK IS ITS
INHERENT LACK OF ADAPTABILITY ACROSS ALL STAGES OF THE DEVELOPMENT LIFE CYCLE.
2.IGNORES MID PROCESS USER/CLIENT FEEDBACK
3.DELAYED TESTING PERIOD

6. STRUCTURAL DIAGRAM:

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