I am trying to develop an ICT-Issue-Tracking application. The front end is to be java (for desktop version) and python or php for the web version but i want to code queries in native java and reduce the use of regular sql patterns. Can my application use the objectdb.jar to write to mariadb or mysql using native java JPA API and in some cases JPQL or must i store to an Objectdb unique database? Moreso, does Objectdb have backup tools to back up the singular object database file created. How reliable in a production environment is this? Can objectdb handle client - server connections from over 200 users? Can it be efficiently used in client-server mode? Code exmples where possible will be appreciated.