Abstraction? (1 Viewer)

[Aj10001]

Ok. Both Sam Davis's textbook and the Excel SDD textbook seem to have completely different definitions of abstraction. Can someone who knows what they are talking about please give an explanation?

Much Appreciated

 

[Glide]

Your not the only one having problems with this :|
Asking the same thing in my thread 'OOP questions'

 

[Jinglebell]

yeah i noticed that they were quite different definitions...and then trusted the Sam Davis book, as it is my SDD bible

 

[Glide]

Care to type out that definition for here?

 

[Freedom_Dragon]

Abstraction : Can be easier understood in terms of "picking out"
the hidden common features(codes behind mothod) of the objects that was hidden as a result of Encapsulation and dealing with them individually.

Err yeah, this is as easy of the definition of Abstraction as it gets.

 

[B.A.M]

Abstraction: this is focusing on the commonalities (common features) among objects in the system rather than on specific cases.

In a system with classes/subclasses as students, teachers, parents etc a commonality would be that all of these objects are treated as people. They all have a DOB, address, telephone etc the common methods could be "new, delete, edit, print_details etc"

That's what we were told in our class

hope it helps