14. The computer readable storage medium of claim 7 , wherein the second object is a document object that has attributes comprising a document identifier, a document title, a creation date, and document content.
14. The computer readable storage medium of claim 7 , wherein the second object is a document object that has attributes comprising a document identifier, a document title, a creation date, and document content. 15. The computer readable storage medium of claim 14 , wherein each instance of the document object comprises a value of the document identifier attribute and corresponding values of the other attributes of the document object.