Apache HBase is a non-relational (NoSQL) database that runs on top of the Hadoop Distributed File System (HDFS). Its is columnar and provides fault-tolerant storage and quick access to large quantities of sparese data. It also adds transactional capabilities to Hadoop, allowing users to conduct updates, inserts and deletes.
Hbase provides random, real time access to your Big Data. HBase was created for hosting very large tables with billions of rows and millions of columns.