5. The computer-implemented method of claim 1 , wherein the document is an XML document, and wherein the base storage schema is an XML schema.
1. A computer-implemented method for providing dynamic schema assembly to accommodate application specific metadata in data objects managed by a content management system (CMS), comprising: receiving a request to access a document from the CMS, wherein the document is associated with a base storage schema, wherein content of the document is composed according to the base storage schema, wherein the base storage schema specifies a valid set of markup language tags and markup language attributes for use in the document; modifying an instance of the document by embedding the application specific metadata in the document, wherein the application specific metadata includes at least one of a markup language tag and a markup language attribute that is not valid according to the base storage schema; modifying the base storage schema associated with the document to accommodate the application specific metadata by adding the at least one markup language tag and markup language attribute from the application specific metadata to the base storage schema, thereby creating a transient schema, wherein the modified instance of the document is valid according to the transient schema; providing the modified instance of the document and the transient schema separately to a requesting application in response to the request; receiving the modified instance of the document back from the requesting application; stripping the application specific metadata from the modified instance of the document, wherein the modified, stripped instance of the document received back from the requesting application is valid according to the base storage schema; and storing the modified, stripped instance of the document in the CMS.