...
What is a persistent identifier?
What is name resolution?
Why use persistent identifiers?
What resources should be named?
The Name Resolution Service (NRS), developed and maintained by Library Technology Services (LTS), is a comprehensive service for creating, maintaining, and resolving persistent identifiers.
...
Why use persistent identifiers?
In general, important resources should never be directly identified by a URL because URLs can become invalid if the resource is moved or if the way it is accessed changes. (This is the cause of the "404 File Not Found" browser error message.) By adding a layer of indirection into the access process, persistent identifiers will never become invalid. If a resource moves, only the URL to which the persistent identifier resolves needs to be updated; the identifier itself can remain unchanged. As long as persistent identifiers are properly maintained within NRS, 404 errors should never occur when accessing named resources.
| Anchor | ||||
|---|---|---|---|---|
|
What resources should be named?
Digital objects intended for network delivery and accessed through OIS-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:
...