R Programming & Big Data Analytics

Part A:

Describe some more challenges that have cropped up with the evolution of Big Data.

Part B:

There are three types of Big Data databases namely key-value databases, column-oriented databases, and document-oriented databases. 

(i) Differentiate between these three types of databases.

(ii) Categorise the existing Big Data databases into these three groups.

Work out both parts in a word document and upload on the platform.