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By:
Nabeela Khan
Alina Asif
Sidra Bibi
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? Object
? encapsulates both data (attributes) and data manipulation
functions (called methods, operations, and services)
? Class
? generalized description (template or pattern) that describes a
collection of similar objects
? Super-class
? a collection of objects
? Sub-class
? an instance of a class
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? Class hierarchy
? attributes and methods of a super-class are inherited by its
sub-classes
? Messages
? the means by which objects exchange information with one
another
? Inheritance
? provides a means for allowing sub-classes to reuse existing
super-class data and procedures
? provides mechanism for propagating changes
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? Polymorphism
? mechanism that allows several objects in an class hierarchy to
have different methods with the same name
? instances of each sub-class will be free to respond to
messages by calling their own version of the method
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? Build new class from scratch without using
inheritance
? Use inheritance to create new class from
existing class contains most of the desired
attributes and operations
? Restructure the class hierarchy so that the
required attributes and operations can be
inherited by the newly created class
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? Override some attributes or operations in an
existing class and use inheritance to create a
new class with (specialized) private versions of
these attributes and operations.
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? Customer communication
? Planning
? Risk analysis
? Engineering construction and analysis
? Customer evaluation
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? Identify candidate classes
? Look-up classes in library
? Extract classes if available
? Engineer classes if not available
? Object-oriented analysis (OOA)
? Object-oriented design (OOD)
? Object-oriented programming (OOP)
? Object-oriented testing (OOT)
? Put new classes in library
? Construct Nth iteration of the system
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? External Entities
? devices or people
? Things in Problem Domain
? Reports, displays, signals
? Events
? completion of some task
? Roles
? manager, engineer, salesperson
? Organizational Units
? divisions, groups, teams
? Structures
? sensors, vehicles, computers
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? Does object information need to be retained?
? Does object provide a set of needed services that can
change its attributes?
? Does object have major (important) attributes?
? Can you identify common attributes for all object
instances?
? Can you identify common operations for all object
instances?
? Is it an external entity that produces or consumes
information?
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? Establish a common process framework (CPF).
? Use CPF & historic data to eliminate time & effort.
? Specify products & milestones.
? Define Q.A. checkpoints.
? Manage changes.
? Monitor project.
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? Contracts completed.
? Object-Oriented Analysis completed.
? Object-Oriented Design completed.
? Object-Oriented Programming completed.
? Object-Oriented Testing completed.
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? Number of scenario scripts.
? Number of key classes.
? Number of support classes.
? (# key classes)/(# support classes).
? Number of major iterations (around spiral
model).
? Number of completed contracts.
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