COMPUTER SCIENCE
Topic: Software Engineering
Sub-topic: Life Cycle Model
Compiled & Presented by: Traci-Lee Long
Kaydi-Ann Spencer
Software Engineering
This is the application of a systematic,
disciplined and quantifiable approach to the
development, operation, and maintenance of
software. It also deals with the study of these
approaches.
Software Engineering
It is concerned with developing and
maintaining software systems that behave
reliably and efficiently, that are affordable to
develop and maintain, and that also satisfies all
the requirements defined by the
customers/users.
Software Development Life Cycle
This comprises of a series of steps or tasks
taken/done during and for the development of
a software.
Software Development Life Cycle

The basic steps include:

Planning

Analysis

Design

Implementation

Maintenance
There are other variations
Fountain Model/Approach

It is mainly used and accepted as an objectoriented development method by many
engineers. (acceptability)

This has to do with software reuse and life cycle
in a number of development activities in which
integration is supported.
Fountain Model/Approach
In analogy:
 “Just as a in a water fountain where the water
rises up the middle and either falls back into
the pool below or is trapped in the
intermediate level” so does the fountain
approach operate.
Fountain Model/Approach


The general movement from the analysis phase
through the design phase and to implementation
is interlaced with iterative cycles across theses
phases during the software development
process.
It is a highly iterative approach and it reflects
non-gaping properties.
Fountain Model/Approach
Fountain Model/Approach
Strengths

It supports incremental development (robustness).

It recognizes that some activities cannot stand before
others and that there is a overlap of activities
throughout the development cycle (understandability).

It leads to focusing on sections of the whole system
known as clusters or subsystems
Fountain Model/Approach
Strengths

It is suitable for Object-Oriented projects that
have high proportion so reusable deliverables
(visibility)

It goes towards developing the full reuse
potential of software clusters and the created
system

It reflects the general approach of incrementing
and iterating over cluster until they develop.
(reliability & robustness)
Fountain Model/Approach
Strengths

It allows for the extending of clusters in a controlled
and flexible manner to accommodate increased
knowledge. (maintainability)

It allows for the fact that there is considerable overlap
of activities throughout the development cycle.

It allows for iteration within phases (reliability).

It is more flexible than waterfall or spiral models for
Object-Oriented software.
Fountain Model/Approach
Weakness

Its focus is unbalanced as everything is reuse
and nothing about risks.

It does not analyze clusters to see if they are of
low reuse potential but goes for reuse
generalization.
Bibliography

The following sources were used to compile the necessary information for this
presentation:

Software Engineering for Image Processing Systems by P. A. Laplante.
retrieved from


Software Development Life Cycle by P. Lorbin



http://www.site-reference.com/articles/Website-Development/Software-DevelopmentLife-Cycle-Models.html :
Productive objects: an applied software project management framework by
Robert J. Muller


http://books.google.com/books?id=TKvN5OiZCEC&pg=PA31&lpg=PA31&dq=object+oriented+life+cycle+fountain+models&source=bl&ots=9hjz-_KD6I&sig=MZ2hb3SszaJlbHctjx2OlJww1E&hl=en&ei=wn7HSrPBBZWN8AbG6pTiCA&sa=X&oi=book_result&
ct=result&resnum=2#v=onepage&q=object%20oriented%20life%20cycle%20fountain%20models&f=false :
http://books.google.com/books?id=s_gh4zwYAp0C&printsec=frontcover&sour
ce=gbs_v2_summary_r&cad=0#v=onepage&q=&f=false
www.csse.monash.edu.au/.../html/text.html
http://en.wikipedia.org/wiki/Systems_Development_Life_Cycle