MapR-DB and Applications This section contains information on developing client application for binary and JSON tables. MapR dbclient Behavior Requests from client applications to connect to MapR-DB are handled by the MapR dbclient. This dbclient has the following behaviors when establishing the first connection and when re-establishing connections after the CLDB goes offline. Developing Client Apps - Binary Tables MapR-DB includes a version of libhbase, the open source library of C APIs for creating and accessing Apache HBase tables. Developing Client Apps - JSON Tables As part of its support for JSON tables, MapR-DB implements the OJAI API library. This section describes how to use MapR-DB's implementation to develop client applications that access JSON tables.