In computing, info is a

Uniform Resource Identifier A Uniform Resource Identifier (URI) is a unique sequence of characters that identifies a logical or physical resource used by web technologies. URIs may be used to identify anything, including real-world objects, such as people and places, conc ...

(URI) scheme which enables identifiers from public namespaces to be represented as URIs, when they would otherwise have no canonical URL form, such as

Library of Congress The Library of Congress (LOC) is the research library that officially serves the United States Congress and is the ''de facto'' national library of the United States. It is the oldest federal cultural institution in the country. The libra ...

identifiers, Handle System handles, and

Digital object identifier A digital object identifier (DOI) is a persistent identifier or handle used to uniquely identify various objects, standardized by the International Organization for Standardization (ISO). DOIs are an implementation of the Handle System; the ...

Specification

The specification for the info scheme is provided by the Informational RFC 4452.

Example

The following is an example of an info URI: :info:ddc/22/eng//004.678 In this example, "ddc" designates the

Dewey Decimal Classification The Dewey Decimal Classification (DDC), colloquially known as the Dewey Decimal System, is a proprietary library classification system which allows new books to be added to a library in their appropriate location based on subject. Section 4.1 ...

namespace and "22/eng//004.678" is the identifier within that namespace.

Namespace registry

Between 2003 and 2010, info namespaces were registered by the

Online Computer Library Center OCLC, Inc., doing business as OCLC, See also: is an American nonprofit cooperative organization "that provides shared technology services, original research, and community programs for its membership and the library community at large". It w ...

(OCLC) Office of Research on behalf of the

National Information Standards Organization The National Information Standards Organization (NISO; ) is a United States non-profit standards organization that develops, maintains and publishes technical standards related to publishing, bibliographic and library applications. It was fou ...

(NISO), an American library standards body. About 30 namespaces were registered. In 2010, the registry was closed, in view of the increasing importance of the W3C

Linked Data In computing, linked data (often capitalized as Linked Data) is structured data which is interlinked with other data so it becomes more useful through semantic queries. It builds upon standard Web technologies such as HTTP, RDF and URIs, but ...

paradigm, and adopters of the info scheme were advised to migrate resource identity requirements towards "mainstream Web practices."

References

{{URI scheme URI schemes Identifiers