SDLC

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SDLC

• Lecture 2
• Spring 2006

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Systems Development Life Cycle
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People in the SDLC

• Project sponsor, CHAMPION
• Business Analyst, PROJECT REQUEST
• Systems Analyst, SENIOR ANALYST
• Design, PROGRAMMERS
• Implementation, INSTALLERS
• Maintenance, HELP DESK, IT SUPPORT
• END-USERS

See TEXT p. 20
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OO Paradigm

• Closes the cognitive gap between our view of
  the system and its implementation to minimize
  analysis and design errors
• Makes reuse possible so that system components
  can evolve toward a defect-free state
• Fosters a prototyping life-cycle which increases
  the interaction between users and analyzers,
  designers, and implementors

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Gaps

• The object-oriented approach provides a closer
  match between our shared perceptions of reality
  and the languages and tools of analysis, design,
  and implementation.
• As a consequence, the communication gaps which
  can occur between the various system-building
  activities are potentially much smaller.

STRUCTURED
Planning
Analysis/Logical Design
Physical Design / Implementation
OBJECT-ORIENTED
Planning
Analysis/Logical Design
Physical Design / Implementation
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OOAD Methodologies/Notations/Approaches

• a partial list
• Beck Cunningham
• Berard
• Booch
• de Champeaux, Lea, Faure
• Coad Yourdon
• Emblay, Kurtz, Woodfield
• Firesmith
• Graham
• Henderson-Sellers Edwards
• Jacobson
• Lorenz
• Martin
• Martin Odell
• Meyer
• Rubin Goldberg ( Gibson)
• Rumbaugh, et al.
• Shlaer Mellor
• Wirfs-Brock, et al.

and the (current) winners are Notation
Process - UML (Booch, Jacobson, and Rumbaugh)
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The Project Team Process