Abstract:

"Big Data" is one of the hottest topics in 2012. We try to detangle Big Data from the view of database researcher, and describe the concept of Big Data and the relationship between Big Data and traditional databases. Revisiting database research in the Big Data scene includes reinvestigating the concept of database and essential issues of database research, discussing the relationship between Hadoop and Big Data, database research and Big Data research as well. Through tracking the inspiration and development of Hadoop, we try to explain why it has been such a big deal in Big Data. The basic ideas of the report are: (1) Big Data is a general concept. Classification of Big Data is helpful to have a deep understanding of it; (2) Big Data research closely correlates to its applications; (3) Hadoop is an enlightening exploration for database research going back to file system; (4) the philosophy and methodology of Big Data is consistent with those of traditional databases.

Key words: big data;data base;Hadoop