Big data is the term for a collection of data sets so large and complex that it becomes difficult to process using on-hand database management tools or traditional data processing applications.
The data is too big, moves too fast, or doesn’t fit the structures of your database architectures. To gain value from this data, you must choose an alternative way to process it.The challenges include capture, storage, search, sharing, transfer, analysis and visualization.So a need arises to know how Big data works? There are some open source tools , you can try your hands with.