DBMS supporting graph, document, full-text and geospatial models
Java persistence using JDO, JPA or REST
Database SQL, query tool, using JDBC for Oracle,SQLite,PostgreSQL,etc
Version Control for your Database
An extended Subversion client enabling versioning of database schemas
Administration tool for JEE applications
Pluggable data administration UI interface for Java web applications
RMS is created in Java and still not completed, still working on it.