Big Data

What is NOT a characteristic of big data?

• Volume

• Variety

• Vision

• Velocity

What are the 3 V's?

• Volume, Velocity, Variety

• Variety, Various, Volume

• Volume, Verification, Vigorous

• Verification, Valuable, Volatile

What does the term Big Data mean?

• Structured data

• Large amounts of data stored in a relational database

• Data that is collected by Facebook

• Data that is generally too large to store on a single server

Why is Big Data NOT suitable for storage in a relational database? (PICK 3)

• It is impossible to use standard query tools such as SQL.

• Big Data is very diverse and unpredictable.

• The lack of structure means it cannot be organised into the rows and columns of a relational database.

• Big Data is very structured and organised.

Processing big data often needs to be distributed across multiple servers.

• True

• False

A fact is a piece of data that cannot be deconstructed further and is timestamped.

It is said to be _________ true.

Which features of functional programming are useful for working with Big Data? (PICK 3)

• The use of variables

• Immutable data structures

• Statelessness, the programme state does not change during programme execution

• Higher order functions allow functions to be input as arguments

• Allocating large amounts of memory to functions

What does immutable mean?

• An object that is called by a function

• A data structure that can change size

• An object whose state cannot be modified after it is created

• A LIFO data structure

A graph schema stores data as ….

• entities, properties & cardinality

• rows and columns

• fields and attributes

• nodes, relationships & properties

What would Amazon use Big Data for?

• To store customer details

• To analyse buying trends and recommend future purchases

• To store payment details

• To predict future company earnings