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The process of creating a persistent identifier is also known as "naming" a digital resource. The majority of persistent identifiers are created for digital objects when they are deposited into the Digital Repository (DRS). Objects already stored in the DRS can be named by using the DRS Web Admin. NRS has its own Admin interface that supports naming of objects inside or outside of DRS.
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What resources should be named?
Digital objects intended for network delivery and accessed through OISLTS-supported delivery services, such as the Image Delivery Service (IDS) or Page Delivery Service (PDS), must be given persistent identifiers in NRS. Other objects, such as archival masters intended only for storage, can be given persistent identifiers if they meet the following criteria:
- The object represents a complete intellectual work, either an atomic work such as an image or a sound file, or an aggregate work such as a multi-page volume. In general, individual components of an aggregate work that have little or no contextual meaning separate from the aggregate, such as a single page of a volume, should not be given persistent identifiers.
- Web links to the object will be established and distributed.
- The object's location can be tracked and maintained reliably.
- The object possesses sufficient intellectual or curatorial value as to warrant the permanent maintenance of the persistent identifier.