Big data is a term, everything where you stored lots of data which is unstructured is bigdata. For example computer hard drive where we put movies, songs, excel file, doc file, application file and reports in just one folder.
Big data is simply the large sets of data that business person and other parties put together to serve specific goals and operations. Big data can include many different kinds of data in many different kinds of formats.
Big data is just a storage system where we stored millons of millions files.
Hadoop: It is open-source software framework for storage and large-scale processing of data-sets based on mapReduce. MapReduce splits big Data over several nodes in order to achieve a parallel computing.
Hadoop is software program which works on big data to provide you useful information.
Hadoop is just a software which filter the required information from tons of information.
Hadoop Interview Questions And Answers