RDBMS vs HBase
There differences between RDBMS and HBase are given below.
Schema/Database in RDBMS can be compared to namespace in Hbase.
A table in RDBMS can be compared to column family in Hbase.
A record (after table joins) in RDBMS can be compared to a record in Hbase.
A collection of tables in RDBMS can be compared to a table in Hbase..
HBase Data Model