What is DRQL

This chapter of the book chapter provides detailed overview of the major concept used in Big Data. In order to process the huge volume of data, the first step is the pre-processing which is required to anomalies such as, missing values by applying various transformations. This chapter provides a detail overview of preprocessing tools used for Big Data such as, R, Yahoo! Pipes, Mechanical Turk, Elasticsearch etc. Beside preprocessing tools, the chapter provides detailed overview of storage tools, programming tools, data visualization, log processing tools and caching tools used for Big Data analytics. In other words, this chapter is the core of the book and provides the overview of the major technologies discussed later in the book.