2.1.1 Thinking Abstractly

COMPLETE

What is abstraction?

removing unnecessary detail

What does abstraction depend on?

what you want to do with the data you have

Describe how a college would use data abstraction

• college only need the necessary details like: full name, gender, address, GCSE results

• not unnecessary like: boring, blonde hair, doesn’t shower

What is representational abstraction?

a representation arrived at by removing unnecessary details

What is the need for abstraction?

to reduce:

• design time

• programming time

• computer processing power

• memory used

What us the difference between abstraction and reality?

Reality = complex, massive, ambiguous, subjective

Abstraction (Model) = finite, simplified, defined, objective