Topic 11 - Big data - Complete

Question 1

Define volume?

Answer 1

Organisations gather and store large amounts of data, the amount of data collected determines whether or not it is big data.

Question 2

Define velocity?

Answer 2

Data streams are collected in a near-to-real-time fashion, making the processing of this data a challenge.

Question 3

Define variety in terms of data type?

Answer 3

Data comes in a wide range of formats, such as text, audio, video, images and unstructured and structured data.

Question 4

Define structured data?

Answer 4

Data that is appropriate to be entered into a relational database in a row and column format.

Question 5

Define unstructured data?

Answer 5

Data that is difficult to organise and is not appropriate to store in a database in row and column format.

Question 6

Define distributed processing?

Answer 6

When data is too big to be processed on a single machine, the processing is distributed across several machines.

Question 7

Define functional programming?

Answer 7

Is a paradigm based on the use of functions to determine variables, where functions use expressions similar to mathematical expressions to calculate the value of a variable.

Question 8

Define a function?

Answer 8

Is a subroutine that carries out a set of instructions and returns a value.

Question 9

Define statelessness?

Answer 9

Each function is calculated with no reliance on any data other than which was passed as functions input.

Question 10

Define higher-order functions?

Answer 10

Are functions that either take other functions as an input or return a function as an output.