2. The system of claim 1 , wherein the plurality of structured documents are included in a Web based Distributed Authoring and Versioning (WebDAV) file system.
2. The system of claim 1 , wherein the plurality of structured documents are included in a Web based Distributed Authoring and Versioning (WebDAV) file system. 3. The system of claim 2 , wherein the WebDAV file system and the index-value data structure are stored in a relational database management system.