Android Training in Chandigarh (3)

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Three Models to model a system

• The Three models are useful to model a system
  from three related but different viewpoints, each
  capturing important aspects of the system, but
  all required for a complete description.

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Each of the three models evolves
during development.

• Class Models Class Models describes structure
  of objects in a system - their identity , their
  relationships to other objects
• State Models State model describes those
  aspects of objects concerned with time and
  sequencing of operations.
• Interaction Models The Interaction model
  describes interaction between objects - how
  individual objects collaborates to achieve the
  behavior of the system as a whole.

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Designing steps of class
Modeling
Step 1 Follow law of Demeter. Step 2
Minimize Coupling. Step 3 Maximize
Cohesion. Step 4 Methods Should do
Something. Step 5 Separate commands from
queries Step 6 Beware of Con nascent Software
elements. Step 7 Consider Adding color to your
Diagrams.
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State
Modeling

• A state model represents the process model for
  one type of change of request. A State represents
  the status of a change request, For example
  Submitted, Assigned, Opened and Closed.

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Events included in the state
modeling

• An Event something that happens in a point of
  time. A one- way transmission of information from
  one object to another or some occurrence that may
  cause the state of a system to change. An event
  has no duration.
• Types of Events
• Time Events
• Guard Condition becoming True
• Change Events
• Call Events
• Signal Events

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CBitss Technologies

• 
  Provides
• Information, Experience,
  Knowledge
• A Unit Of Sukrala IT Services
  Pvt. ltd
• 
  Offers
• Android Training in
  Chandigarh
• 
  

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Contact Us

• OFFICE SCO 23-24-25, LEVEL-3,
• near passport office,
  
• Sector 34A, Chandigarh
• PHONE [phone]
• Visit http//cbitss.com/android-training-in
  -chandigarh.html