b75e89ab_contentGoesHere__feature
[JCR / Jackrabbit] All nodes have access rights, jcr:primaryType and jcr:mixinTypes properties. JCR 2.0 standardizes a set of optional metadata properties. [Midgard] All objects have a set of standard metadata including creator, revisor, timestamps etc [CouchDB] No standard properties [feature] 
standard metadata
contentGoesHere
feature