913aca9a_ent_repository___Henri_Bergius__CouchDB
[feature] IDs [JCR / Jackrabbit] Nodes with mixin "referenceable" have GUID. In practice the node path is often used to reference nodes. [Midgard] Every object has a GUID used for referencing. Objects located in trees that have a "name" property can also be referred to using the path [CouchDB] 
All objects can be accessed via a UUID
What is a content repository - Henri Bergius
CouchDB