What is HBase? HBase

What is HBase? HBase

Classic explanation: http://www.cnblogs.com/skyme/archive/2012/07/25/2608310.html

 

HBase: Non-relational databases; distributed databases; HDFS-based minimum storage unit, which is a file storage. Column storage. (Relational databases belong to row-store)

NoSql: not only SQL non-Relational Data

 

Column storage:

Http://baike.baidu.com/link? Url = MYn7JjlF_6vNUAIh30U6zKSq8FhkPCfKlT6tDTHI2L55aMKVTTn1ZCXdvQexZHf-ckSXqr1G67cKLoyfSObXnq

 

 

A row-based database stores data values in a row, stores the data in the next row, and so on. 1, Smith, Joe, 40000; 2, Jones, Mary, 50000; 3, Johnson, Cathy, 44000; a columnar database stores data values in a column together, then store the data in the next column, and so on. 1, 2, 3; Smith, Jones, Johnson; Joe, Mary, Cathy; 44000,; this is a simplified statement. Representatives of columnar databases include Sybase IQ, infobright, infiniDB, GBase 8a, ParAccel, Sand/DNA Analytics, and Vertica.