COMPUTER SCIENCE

1
COMPUTER SCIENCE

• Topic Software Engineering
• Sub-topic Life Cycle Model
• Compiled Presented by Traci-Lee Long
• Kaydi-Ann Spencer

2
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.

3
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.

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Software Development Life Cycle

• This comprises of a series of steps or tasks
  taken/done during and for the development of a
  software.

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Software Development Life Cycle

• The basic steps include
• Planning
• Analysis
• Design
• Implementation
• Maintenance
• There are other variations

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Fountain Model/Approach

• It is mainly used and accepted as an
  object-oriented 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.

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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.

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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.

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Fountain Model/Approach
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Fountain Model/ApproachStrengths

• 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

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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)

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Fountain Model/ApproachStrengths

• 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.

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Fountain Model/ApproachWeakness

• 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.

14
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
• http//books.google.com/books?idT-KvN5OiZCECpgP
  A31lpgPA31dqobjectorientedlifecycle-founta
  inmodelssourceblots9hjz-_KD6IsigMZ2hb3SszaJ
  lb-Hctjx2OlJww1Ehleneiwn7HSrPBBZWN8AbG6pTiCAs
  aXoibook_resultctresultresnum2vonepageq
  object20oriented20life20cycle-20fountain20mod
  elsffalse
• Software Development Life Cycle by P. Lorbin
• http//www.site-reference.com/articles/Website-Dev
  elopment/Software-Development-Life-Cycle-Models.ht
  ml
• Productive objects an applied software project
  management framework by Robert J. Muller
• http//books.google.com/books?ids_gh4zwYAp0Cprin
  tsecfrontcoversourcegbs_v2_summary_rcad0von
  epageqffalse
• www.csse.monash.edu.au/.../html/text.html
• http//en.wikipedia.org/wiki/Systems_Development_L
  ife_Cycle