Object-Oriented Analysis and Design is the
collection of approaches and processes used to develop a software system that
has an object as its base structure. The concept of an object in this regard
can be thought of like a cell being the base structure of all life. When you
focus on the creation of objects that when implemented together in various
combinations creates the functionality of your system, then you have an
object-oriented system. This is not to be confused with an object-based system
which uses objects and classes, but only to the extent that the constructs hold
data to be used by the system. In an OO system the objects, more specifically
the business objects, contain the brains of the business.
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