• Kanwarpal Singh

The data-driven decision-making is now being recognized, and the notion “Big Data” is growing. Heterogeneity, privacy and timeliness problems with Big Data block development at all phases that can create value of data. The problems begin during data acquisition, when the huge amount of data require us to make decisions, about what data to keep and what to discard and where and how to store data. Most of the data today is not in structured format like data from tweets and blogs on the other hand while images and video are structured for storage and display but not for semantic content transform such data content into a structured format for later analysis is a major challenge.

Big Data; Extraction; Integration;

"BIG DATA: PHASES AND CHALLENGES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.723-728, May 2019, Available :http://www.jetir.org/papers/JETIR1905X92.pdf

"BIG DATA: PHASES AND CHALLENGES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp723-728, May 2019, Available at : http://www.jetir.org/papers/JETIR1905X92.pdf