4.4.1.3 Abstraction and 4.4.1.4 Information hiding

Question 1

What is a model?

Answer 1

An abstraction / leaving out non-essential details.
Computer scientists have to choose what to include in models and what to discard, to determine the minimum amount of detail necessary to model in order to solve a given problem to the required degree of accuracy.

Question 2

What is representational abstraction?

Answer 2

a representation arrived at by removing unnecessary details

Question 3

What is abstraction by generalisation?

Answer 3

abstraction by generalisation or categorisation is a grouping by common characteristics to arrive at a hierarchical relationship of the ‘is a kind of’ type

Question 4

What is information hiding?

Answer 4

The process of hiding all details of an object that do not contribute to its essential characteristics

Question 5

What is abstraction

Answer 5

Omitting unnecessary details (from a representation) / / Storing only those details which are necessary (in the context of the problem being solved);