Big Data technologies are becoming a pervasive technology in day-to-day life. Marketing, financial, automotive are some examples of sectors in which already we can see examples of how big data technologies can have a fundamental impact on society. The Healthcare sector, however, still has not benefitted from the wide scale use of Big Data technologies. This is because, the sector has been traditionally slow in adopting ICT and until recently, most clinical data was not stored digitally but on paper. Clinical decision making for specific diseases cannot be made using current hospital IT systems as information is either not structured or has been collected for operational purposes without having in mind to reuse them for further analysis.