The Document Repository (DR) is a database that, together with the CDR, enables providers to view clinical documentation generated from various systems and sites. Some documents are stored within the DR and others will be indexed to their source location. All documents can be viewed from the EHR viewers as appropriate. The DR supports status progression from preliminary to final, and subsequently amended or addended. It also maintains a version history, which can be made available in a user view if necessary. The Document Repository facilitates rapid inclusion of data from new sources, and making that data available for use in clinical applications. It is built to support meaningful use and evolving standards of clinical data interchange.