SDLC, Iterative Model

SOFTWARE DEVELOPMENT
LIFE CYCLE
(ITERATIVE MODEL)
PRESENTED BY
ABHISHEK KUMAR
SDLC

CONTENTS
SDLC
Iterative models
Iterative Model design
Iterative Model Application
Pros and Cons

SDLC
 Also referred to as the
application development life-
cycle
 Used in systems engineering,
information systems and
software engineering
 Applies to a range of hardware
and software configurations

Iterative models
 It starts with
implementation of a small
set of the software
requirements
 Development begins by
specifying and implementing
just part of the software
 Produces a new version of
the software at the end of
each iteration of the model.

Iterative Model design
Requirements
Design &
Development
Testing Implementation
Testing
Testing
Design &
Development
Design &
Development
Build 1
Build 2
Build 3
Implementation
Implementation

Iterative
Model
Application
 Requirements of the
complete system
 Major requirements must
be defined
 Market constraint.
 A new technology is
being used
 Resources are planned
 High risk features

Pros and Cons
 Some working functionality can be developed quickly and early
 Results are obtained early and periodically.
 Parallel development can be planned.
 Progress can be measured.
 Less costly to change the scope
 Testing and debugging during smaller iteration is easy.
 Risks are identified and resolved during iteration
 Easier to manage risk

Pros and Cons
 More resources may be required.
 Not very suitable for changing requirements.
 More management attention is required.
 Not suitable for smaller projects.
 Management complexity is more.
 System architecture or design issue may arise
 Highly skilled resources are required for risk analysis.
 Projects progress is highly dependent upon the risk analysis
phase

SDLC, Iterative Model

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