1、2Structured data and unstructured data3Structured data and unstructured data4Whats hiding in Unstructured Data?5Big Data metaphorDB（Database） BD (Big Data)Fishing in a pool Fishing in the seaScale MB GB TB PBvariety some kinds of fishes; Structured Thousands kinds of fishes; Structured,semi-structur
2、ed and non structuredSchema First schema, then data First data then schema for dataData Data is just the object to beprocessed Sense other data through some datatool One size fits all No size fits all 1KB=2nullnullB=1024B；1MB= 2nullnull KB=1024KB= 2nullnull B1GB= 2nullnull MB=1024MB= 2nullnullB1TB= 2nullnull GB=1024GB= 2nullnull B 1PB= 2nullnull TB=1024TB= 2nullnull B 1EB= 2nullnull PB=1024PB= 2nullnull B
