Big data represents the information assets characterized by such a high volume, veracity,velocity and variety to require specific technology and analytical methods for its transformation into value.
Big data is where parallel computing tools are needed to handle data. This represents a distinct and clearly defined change in the computer science used, via parallel programming theories, and losses of some of the guarantees and capabilities made by Codd’s relational model.
In general terms, Data Science is the extraction of knowledge from data, which is a continuation of the field data mining and predictive analytics, also known as knowledge discovery and data mining.