3.4.1.3 Abstraction

Question 1

Define Abstraction in computers.

Answer 1

Hiding certain details and only showing essential information to the user.

Question 2

Define Representational Abstraction.

Answer 2

A representation arrived at by removing unnecessary details.

Question 3

Define abstraction by generalisation/categorisation.

Answer 3

Grouping common characteristics together to arrive at a hierarchical relationship of the ‘is a kind of’ type.

Question 4

Define Procedural Abstraction.

Answer 4

When we write procedures which are generalised by having variable parameters. Simply, we have code which can cope with a variety of different situations, depending on how it’s parameters are set when it is called.