913aca9a_ent_repository___Henri_Bergius__CouchDB
[feature] persistence [JCR / Jackrabbit] In Jackrabbit different Persistence Managers can be plugged in (RDBMS, tar file, ...) [Midgard] libgda allows storage to different RDBMS like MySQL, SQLite and Postgres [CouchDB] 
CouchDB has its own storage
What is a content repository - Henri Bergius
CouchDB