As of EclipseLink 2.4, EclipseLink has added JPA support for NoSQL databases, initially with support for MongoDB and Oracle NoSQL. EclipseLink's NoSQL support allows the JPA API and JPA annotations/xml to be used with NoSQL data. EclipseLink also supports several NoSQL specific annotations/xml including @NoSQL that defines a class to map NoSQL data. EclipseLink's NoSQL support is based on previous EIS support offered since EclipseLink 1.0. EclipseLink's EIS support allowed persisting objects to legacy and non-relational databases. EclipseLink's EIS and NoSQL support uses the Java Connector Architecture (JCA) to access the data-source similar to how EclipseLink's relational support uses JDBC. EclipseLink's NoSQL support is extendable to other NoSQL databases, through the creation of an EclipseLink EISPlatform class and a JCA adapter.