Info:
Encyclopedia
In computer science
, info: is a Uniform Resource Identifier
(URI) scheme for information assets with identifiers in public namespace
s that allows legacy
namespaces such as Library of Congress
Identifiers and Digital object identifier
s to be represented as URIs. It acts as a bridging mechanism for older information identifiers to be used in the more generalised and standard URI allocation.
(IETF) separates the info URI scheme’s syntax into two sections: part A, which contains syntactical elements specific to the info scheme, and part B, which follows standard URI definitions. The important info scheme‐specific Part A uses the following URI components:
s), although the character should not be treated as a strict hierarchical delimiter. Its scheme-specific part is an auto-identifier, which is constructed by appending an “identifier” component to a “namespace” component separated by a forward slash.
. In addition to handling “info” URI maintenance, the organisation allows information assets to benefit from the “info” registry without placing the burden of independent URI registration on the Namespace Authority, which is tasked with general URI management. The Namespace Authority provides that information assets identified within a registered namespace “will be added or deleted according to the business processes of the Namespace Authority”. However, it permits network applications to otherwise use “info” URIs in a standard and open way.
{| class="wikitable"
|+ Selected namespaces
|-
!Namespace
!Resource
|-
|info:arxiv/||arXiv
identifiers
|-
|info:bibcode/||Astrophysics Data System
bibcode
s
|-
|info:ddbj-embl-genbank/||Sequence records in DDBJ/EMBL/GenBank
|-
|info:doi/ ||Digital Object Identifier
s
|-
|info:fedora/ ||Fedora Digital Objects and Disseminations
|-
|info:inchi/ ||IUPAC International Chemical Identifier
(InChI)
|-
|info:lanl-repo/||Identifiers used in the Repository of the LANL Research Library
|-
|info:lc/ ||Library of Congress
Identifiers
|-
|info:lccn/ ||Library of Congress Control Number
s
|-
|info:ncid/ ||National Institute of Informatics
NACSIS-CAT Identification Numbers
|-
|info:netref/ ||NISO
Standard for Network Reference Services
|-
|info:nla/ ||National Library of Australia
's digital & digitised collections
|-
|info:oclcnum/ ||OCLC
Worldcat
Control Numbers
|-
|info:ofi/ ||Registry Identifiers used by the NISO
OpenURL
Framework Registry
|-
|info:pmid/ ||PubMed
records
In computer science
, info: is a Uniform Resource Identifier
(URI) scheme for information assets with identifiers in public namespace
s that allows legacy
namespaces such as Library of Congress
Identifiers and Digital object identifier
s to be represented as URIs. It acts as a bridging mechanism for older information identifiers to be used in the more generalised and standard URI allocation.
(IETF) separates the info URI scheme’s syntax into two sections: part A, which contains syntactical elements specific to the info scheme, and part B, which follows standard URI definitions. The important info scheme‐specific Part A uses the following URI components:
{| class="wikitable" border="1"
|-
! component name
! component value
|-
| info-URI
| info-scheme ":" info-identifier [ "#" fragment ]
|-
| info-scheme
| "info"
|-
| info-identifier
| namespace "/" identifier
|-
| namespace
| scheme
|-
| identifier
| *( pchar / "/" )
|}
s), although the character should not be treated as a strict hierarchical delimiter. Its scheme-specific part is an auto-identifier, which is constructed by appending an “identifier” component to a “namespace” component separated by a forward slash.
. In addition to handling “info” URI maintenance, the organisation allows information assets to benefit from the “info” registry without placing the burden of independent URI registration on the Namespace Authority, which is tasked with general URI management. The Namespace Authority provides that information assets identified within a registered namespace “will be added or deleted according to the business processes of the Namespace Authority”. However, it permits network applications to otherwise use “info” URIs in a standard and open way.
{| class="wikitable"
|+ Selected namespaces
|-
!Namespace
!Resource
|-
|info:arxiv/||arXiv
identifiers
|-
|info:bibcode/||Astrophysics Data System
bibcode
s
|-
|info:ddbj-embl-genbank/||Sequence records in DDBJ/EMBL/GenBank
|-
|info:doi/ ||Digital Object Identifier
s
|-
|info:fedora/ ||Fedora Digital Objects and Disseminations
|-
|info:inchi/ ||IUPAC International Chemical Identifier
(InChI)
|-
|info:lanl-repo/||Identifiers used in the Repository of the LANL Research Library
|-
|info:lc/ ||Library of Congress
Identifiers
|-
|info:lccn/ ||Library of Congress Control Number
s
|-
|info:ncid/ ||National Institute of Informatics
NACSIS-CAT Identification Numbers
|-
|info:netref/ ||NISO
Standard for Network Reference Services
|-
|info:nla/ ||National Library of Australia
's digital & digitised collections
|-
|info:oclcnum/ ||OCLC
Worldcat
Control Numbers
|-
|info:ofi/ ||Registry Identifiers used by the NISO
OpenURL
Framework Registry
|-
|info:pmid/ ||PubMed
records
In computer science
, info: is a Uniform Resource Identifier
(URI) scheme for information assets with identifiers in public namespace
s that allows legacy
namespaces such as Library of Congress
Identifiers and Digital object identifier
s to be represented as URIs. It acts as a bridging mechanism for older information identifiers to be used in the more generalised and standard URI allocation.
(IETF) separates the info URI scheme’s syntax into two sections: part A, which contains syntactical elements specific to the info scheme, and part B, which follows standard URI definitions. The important info scheme‐specific Part A uses the following URI components:
{| class="wikitable" border="1"
|-
! component name
! component value
|-
| info-URI
| info-scheme ":" info-identifier [ "#" fragment ]
|-
| info-scheme
| "info"
|-
| info-identifier
| namespace "/" identifier
|-
| namespace
| scheme
|-
| identifier
| *( pchar / "/" )
|}
s), although the character should not be treated as a strict hierarchical delimiter. Its scheme-specific part is an auto-identifier, which is constructed by appending an “identifier” component to a “namespace” component separated by a forward slash.
. In addition to handling “info” URI maintenance, the organisation allows information assets to benefit from the “info” registry without placing the burden of independent URI registration on the Namespace Authority, which is tasked with general URI management. The Namespace Authority provides that information assets identified within a registered namespace “will be added or deleted according to the business processes of the Namespace Authority”. However, it permits network applications to otherwise use “info” URIs in a standard and open way.
{| class="wikitable"
|+ Selected namespaces
|-
!Namespace
!Resource
|-
|info:arxiv/||arXiv
identifiers
|-
|info:bibcode/||Astrophysics Data System
bibcode
s
|-
|info:ddbj-embl-genbank/||Sequence records in DDBJ/EMBL/GenBank
|-
|info:doi/ ||Digital Object Identifier
s
|-
|info:fedora/ ||Fedora Digital Objects and Disseminations
|-
|info:inchi/ ||IUPAC International Chemical Identifier
(InChI)
|-
|info:lanl-repo/||Identifiers used in the Repository of the LANL Research Library
|-
|info:lc/ ||Library of Congress
Identifiers
|-
|info:lccn/ ||Library of Congress Control Number
s
|-
|info:ncid/ ||National Institute of Informatics
NACSIS-CAT Identification Numbers
|-
|info:netref/ ||NISO
Standard for Network Reference Services
|-
|info:nla/ ||National Library of Australia
's digital & digitised collections
|-
|info:oclcnum/ ||OCLC
Worldcat
Control Numbers
|-
|info:ofi/ ||Registry Identifiers used by the NISO
OpenURL
Framework Registry
|-
|info:pmid/ ||PubMed
records
|-
|info:rlgid/ ||RLG
Database Record identifiers
|-
|info:sici/ ||Serial Item and Contribution Identifier
s
|-
|info:sid/ ||Source Identifiers used in the NISO OpenURL
Framework
|-
|info:srw/ ||Search/Retrieve Web Service
|}
Computer science
Computer science or computing science is the study of the theoretical foundations of information and computation and of practical techniques for their implementation and application in computer systems...
, info: is a Uniform Resource Identifier
URI scheme
In the field of computer networking, a URI scheme is the top level of the Uniform Resource Identifier naming structure. All URIs and absolute URI references are formed with a scheme name, followed by a colon character , and the remainder of the URI called the scheme-specific part...
(URI) scheme for information assets with identifiers in public namespace
Namespace (computer science)
A namespace is an abstract container or environment created to hold a logical grouping of unique identifiers or symbols . An identifier defined in a namespace is associated only with that namespace. The same identifier can be independently defined in multiple namespaces...
s that allows legacy
Legacy system
A legacy system is an old method, technology, computer system, or application program that continues to be used, typically because it still functions for the users' needs, even though newer technology or more efficient methods of performing a task are now available...
namespaces such as Library of Congress
Library of Congress
The Library of Congress is the research library of the United States Congress, de facto national library of the United States, and the oldest federal cultural institution in the United States. Located in three buildings in Washington, D.C., it is the largest library in the world by shelf space and...
Identifiers and Digital object identifier
Digital object identifier
A digital object identifier is a character string used to uniquely identify an object such as an electronic document. Metadata about the object is stored in association with the DOI name and this metadata may include a location, such as a URL, where the object can be found...
s to be represented as URIs. It acts as a bridging mechanism for older information identifiers to be used in the more generalised and standard URI allocation.
Syntactical specifications
The URI specifications defined by the Internet Engineering Task ForceInternet Engineering Task Force
The Internet Engineering Task Force develops and promotes Internet standards, cooperating closely with the W3C and ISO/IEC standards bodies and dealing in particular with standards of the TCP/IP and Internet protocol suite...
(IETF) separates the info URI scheme’s syntax into two sections: part A, which contains syntactical elements specific to the info scheme, and part B, which follows standard URI definitions. The important info scheme‐specific Part A uses the following URI components:
| component name | component value |
|---|---|
| info-URI | info-scheme ":" info-identifier [ "#" fragment ] |
| info-scheme | "info" |
| info-identifier | namespace "/" identifier |
| namespace | scheme |
| identifier | *( pchar / "/" ) |
Other specifications
The info URI scheme supports hierarchical processing with a forward slash character ‘/’ (also commonly seen in Uniform Resource LocatorUniform Resource Locator
In computing, a uniform resource locator or universal resource locator is a specific character string that constitutes a reference to an Internet resource....
s), although the character should not be treated as a strict hierarchical delimiter. Its scheme-specific part is an auto-identifier, which is constructed by appending an “identifier” component to a “namespace” component separated by a forward slash.
Namespace authority and the “info” registry
To handle info URI maintenance, the IETF established an “info” URI scheme metadata registryMetadata registry
A metadata registry is a central location in an organization where metadata definitions are stored and maintained in a controlled method.-Use of Metadata Registries:...
. In addition to handling “info” URI maintenance, the organisation allows information assets to benefit from the “info” registry without placing the burden of independent URI registration on the Namespace Authority, which is tasked with general URI management. The Namespace Authority provides that information assets identified within a registered namespace “will be added or deleted according to the business processes of the Namespace Authority”. However, it permits network applications to otherwise use “info” URIs in a standard and open way.
{| class="wikitable"
|+ Selected namespaces
|-
!Namespace
!Resource
|-
|info:arxiv/||arXiv
ArXiv
The arXiv |Chi]], χ) is an archive for electronic preprints of scientific papers in the fields of mathematics, physics, astronomy, computer science, quantitative biology, statistics, and quantitative finance which can be accessed online. In many fields of mathematics and physics, almost all...
identifiers
|-
|info:bibcode/||Astrophysics Data System
Astrophysics Data System
The Astrophysics Data System , developed by the National Aeronautics and Space Administration , is an online database of over eight million astronomy and physics papers from both peer reviewed and non-peer reviewed sources...
bibcode
Bibcode
The bibcode is an identifier used by a number of astronomical data systems to specify literature references. The bibcode was developed to be used in SIMBAD and the NASA/IPAC Extragalactic Database , but is now used more widely, for example, in the NASA Astrophysics Data System...
s
|-
|info:ddbj-embl-genbank/||Sequence records in DDBJ/EMBL/GenBank
GenBank
The GenBank sequence database is an open access, annotated collection of all publicly available nucleotide sequences and their protein translations. This database is produced and maintained by the National Center for Biotechnology Information as part of the International Nucleotide Sequence...
|-
|info:doi/ ||Digital Object Identifier
Digital object identifier
A digital object identifier is a character string used to uniquely identify an object such as an electronic document. Metadata about the object is stored in association with the DOI name and this metadata may include a location, such as a URL, where the object can be found...
s
|-
|info:fedora/ ||Fedora Digital Objects and Disseminations
|-
|info:inchi/ ||IUPAC International Chemical Identifier
International Chemical Identifier
The IUPAC International Chemical Identifier is a textual identifier for chemical substances, designed to provide a standard and human-readable way to encode molecular information and to facilitate the search for such information in databases and on the web...
(InChI)
|-
|info:lanl-repo/||Identifiers used in the Repository of the LANL Research Library
LANL Research Library
The LANL Research Library is a research library at Los Alamos National Laboratory. It contains a substantial collections of books, journals, databases, patents along with technical reports. Additionally it offers literature searching, training and outreach services...
|-
|info:lc/ ||Library of Congress
Library of Congress
The Library of Congress is the research library of the United States Congress, de facto national library of the United States, and the oldest federal cultural institution in the United States. Located in three buildings in Washington, D.C., it is the largest library in the world by shelf space and...
Identifiers
|-
|info:lccn/ ||Library of Congress Control Number
Library of Congress Control Number
The Library of Congress Control Number or LCCN is a serially based system of numbering cataloging records in the Library of Congress in the United States...
s
|-
|info:ncid/ ||National Institute of Informatics
National Institute of Informatics
The is a Japanese research institute created in April 2000 for the purpose of advancing the study of informatics. This institute is also devoted to creating a system to facilitate the spread of scientific information to the general public. The NII is the only comprehensive research institute in...
NACSIS-CAT Identification Numbers
|-
|info:netref/ ||NISO
Niso
Niso is a genus of very small parasitic sea snails, marine gastropod mollusks or micromollusks in the family Eulimidae. -Species:According to the World Register of Marine Species the following species with accepted names are included within the genus Niso * Niso aeglees Bush, 1885* Niso albida...
Standard for Network Reference Services
|-
|info:nla/ ||National Library of Australia
National Library of Australia
The National Library of Australia is the largest reference library of Australia, responsible under the terms of the National Library Act for "maintaining and developing a national collection of library material, including a comprehensive collection of library material relating to Australia and the...
's digital & digitised collections
|-
|info:oclcnum/ ||OCLC
OCLC
OCLC Online Computer Library Center, Inc. is "a nonprofit, membership, computer library service and research organization dedicated to the public purposes of furthering access to the world’s information and reducing information costs"...
Worldcat
WorldCat
WorldCat is a union catalog which itemizes the collections of 72,000 libraries in 170 countries and territories which participate in the Online Computer Library Center global cooperative...
Control Numbers
|-
|info:ofi/ ||Registry Identifiers used by the NISO
Niso
Niso is a genus of very small parasitic sea snails, marine gastropod mollusks or micromollusks in the family Eulimidae. -Species:According to the World Register of Marine Species the following species with accepted names are included within the genus Niso * Niso aeglees Bush, 1885* Niso albida...
OpenURL
OpenURL
OpenURL is a standardized format of Uniform Resource Locator intended to enable Internet users to more easily find a copy of a resource that they are allowed to access...
Framework Registry
|-
|info:pmid/ ||PubMed
PubMed
PubMed is a free database accessing primarily the MEDLINE database of references and abstracts on life sciences and biomedical topics. The United States National Library of Medicine at the National Institutes of Health maintains the database as part of the Entrez information retrieval system...
records
In computer science
Computer science
Computer science or computing science is the study of the theoretical foundations of information and computation and of practical techniques for their implementation and application in computer systems...
, info: is a Uniform Resource Identifier
URI scheme
In the field of computer networking, a URI scheme is the top level of the Uniform Resource Identifier naming structure. All URIs and absolute URI references are formed with a scheme name, followed by a colon character , and the remainder of the URI called the scheme-specific part...
(URI) scheme for information assets with identifiers in public namespace
Namespace (computer science)
A namespace is an abstract container or environment created to hold a logical grouping of unique identifiers or symbols . An identifier defined in a namespace is associated only with that namespace. The same identifier can be independently defined in multiple namespaces...
s that allows legacy
Legacy system
A legacy system is an old method, technology, computer system, or application program that continues to be used, typically because it still functions for the users' needs, even though newer technology or more efficient methods of performing a task are now available...
namespaces such as Library of Congress
Library of Congress
The Library of Congress is the research library of the United States Congress, de facto national library of the United States, and the oldest federal cultural institution in the United States. Located in three buildings in Washington, D.C., it is the largest library in the world by shelf space and...
Identifiers and Digital object identifier
Digital object identifier
A digital object identifier is a character string used to uniquely identify an object such as an electronic document. Metadata about the object is stored in association with the DOI name and this metadata may include a location, such as a URL, where the object can be found...
s to be represented as URIs. It acts as a bridging mechanism for older information identifiers to be used in the more generalised and standard URI allocation.
Syntactical specifications
The URI specifications defined by the Internet Engineering Task ForceInternet Engineering Task Force
The Internet Engineering Task Force develops and promotes Internet standards, cooperating closely with the W3C and ISO/IEC standards bodies and dealing in particular with standards of the TCP/IP and Internet protocol suite...
(IETF) separates the info URI scheme’s syntax into two sections: part A, which contains syntactical elements specific to the info scheme, and part B, which follows standard URI definitions. The important info scheme‐specific Part A uses the following URI components:
{| class="wikitable" border="1"
|-
! component name
! component value
|-
| info-URI
| info-scheme ":" info-identifier [ "#" fragment ]
|-
| info-scheme
| "info"
|-
| info-identifier
| namespace "/" identifier
|-
| namespace
| scheme
|-
| identifier
| *( pchar / "/" )
|}
Other specifications
The info URI scheme supports hierarchical processing with a forward slash character ‘/’ (also commonly seen in Uniform Resource LocatorUniform Resource Locator
In computing, a uniform resource locator or universal resource locator is a specific character string that constitutes a reference to an Internet resource....
s), although the character should not be treated as a strict hierarchical delimiter. Its scheme-specific part is an auto-identifier, which is constructed by appending an “identifier” component to a “namespace” component separated by a forward slash.
Namespace authority and the “info” registry
To handle info URI maintenance, the IETF established an “info” URI scheme metadata registryMetadata registry
A metadata registry is a central location in an organization where metadata definitions are stored and maintained in a controlled method.-Use of Metadata Registries:...
. In addition to handling “info” URI maintenance, the organisation allows information assets to benefit from the “info” registry without placing the burden of independent URI registration on the Namespace Authority, which is tasked with general URI management. The Namespace Authority provides that information assets identified within a registered namespace “will be added or deleted according to the business processes of the Namespace Authority”. However, it permits network applications to otherwise use “info” URIs in a standard and open way.
{| class="wikitable"
|+ Selected namespaces
|-
!Namespace
!Resource
|-
|info:arxiv/||arXiv
ArXiv
The arXiv |Chi]], χ) is an archive for electronic preprints of scientific papers in the fields of mathematics, physics, astronomy, computer science, quantitative biology, statistics, and quantitative finance which can be accessed online. In many fields of mathematics and physics, almost all...
identifiers
|-
|info:bibcode/||Astrophysics Data System
Astrophysics Data System
The Astrophysics Data System , developed by the National Aeronautics and Space Administration , is an online database of over eight million astronomy and physics papers from both peer reviewed and non-peer reviewed sources...
bibcode
Bibcode
The bibcode is an identifier used by a number of astronomical data systems to specify literature references. The bibcode was developed to be used in SIMBAD and the NASA/IPAC Extragalactic Database , but is now used more widely, for example, in the NASA Astrophysics Data System...
s
|-
|info:ddbj-embl-genbank/||Sequence records in DDBJ/EMBL/GenBank
GenBank
The GenBank sequence database is an open access, annotated collection of all publicly available nucleotide sequences and their protein translations. This database is produced and maintained by the National Center for Biotechnology Information as part of the International Nucleotide Sequence...
|-
|info:doi/ ||Digital Object Identifier
Digital object identifier
A digital object identifier is a character string used to uniquely identify an object such as an electronic document. Metadata about the object is stored in association with the DOI name and this metadata may include a location, such as a URL, where the object can be found...
s
|-
|info:fedora/ ||Fedora Digital Objects and Disseminations
|-
|info:inchi/ ||IUPAC International Chemical Identifier
International Chemical Identifier
The IUPAC International Chemical Identifier is a textual identifier for chemical substances, designed to provide a standard and human-readable way to encode molecular information and to facilitate the search for such information in databases and on the web...
(InChI)
|-
|info:lanl-repo/||Identifiers used in the Repository of the LANL Research Library
LANL Research Library
The LANL Research Library is a research library at Los Alamos National Laboratory. It contains a substantial collections of books, journals, databases, patents along with technical reports. Additionally it offers literature searching, training and outreach services...
|-
|info:lc/ ||Library of Congress
Library of Congress
The Library of Congress is the research library of the United States Congress, de facto national library of the United States, and the oldest federal cultural institution in the United States. Located in three buildings in Washington, D.C., it is the largest library in the world by shelf space and...
Identifiers
|-
|info:lccn/ ||Library of Congress Control Number
Library of Congress Control Number
The Library of Congress Control Number or LCCN is a serially based system of numbering cataloging records in the Library of Congress in the United States...
s
|-
|info:ncid/ ||National Institute of Informatics
National Institute of Informatics
The is a Japanese research institute created in April 2000 for the purpose of advancing the study of informatics. This institute is also devoted to creating a system to facilitate the spread of scientific information to the general public. The NII is the only comprehensive research institute in...
NACSIS-CAT Identification Numbers
|-
|info:netref/ ||NISO
Niso
Niso is a genus of very small parasitic sea snails, marine gastropod mollusks or micromollusks in the family Eulimidae. -Species:According to the World Register of Marine Species the following species with accepted names are included within the genus Niso * Niso aeglees Bush, 1885* Niso albida...
Standard for Network Reference Services
|-
|info:nla/ ||National Library of Australia
National Library of Australia
The National Library of Australia is the largest reference library of Australia, responsible under the terms of the National Library Act for "maintaining and developing a national collection of library material, including a comprehensive collection of library material relating to Australia and the...
's digital & digitised collections
|-
|info:oclcnum/ ||OCLC
OCLC
OCLC Online Computer Library Center, Inc. is "a nonprofit, membership, computer library service and research organization dedicated to the public purposes of furthering access to the world’s information and reducing information costs"...
Worldcat
WorldCat
WorldCat is a union catalog which itemizes the collections of 72,000 libraries in 170 countries and territories which participate in the Online Computer Library Center global cooperative...
Control Numbers
|-
|info:ofi/ ||Registry Identifiers used by the NISO
Niso
Niso is a genus of very small parasitic sea snails, marine gastropod mollusks or micromollusks in the family Eulimidae. -Species:According to the World Register of Marine Species the following species with accepted names are included within the genus Niso * Niso aeglees Bush, 1885* Niso albida...
OpenURL
OpenURL
OpenURL is a standardized format of Uniform Resource Locator intended to enable Internet users to more easily find a copy of a resource that they are allowed to access...
Framework Registry
|-
|info:pmid/ ||PubMed
PubMed
PubMed is a free database accessing primarily the MEDLINE database of references and abstracts on life sciences and biomedical topics. The United States National Library of Medicine at the National Institutes of Health maintains the database as part of the Entrez information retrieval system...
records
In computer science
Computer science
Computer science or computing science is the study of the theoretical foundations of information and computation and of practical techniques for their implementation and application in computer systems...
, info: is a Uniform Resource Identifier
URI scheme
In the field of computer networking, a URI scheme is the top level of the Uniform Resource Identifier naming structure. All URIs and absolute URI references are formed with a scheme name, followed by a colon character , and the remainder of the URI called the scheme-specific part...
(URI) scheme for information assets with identifiers in public namespace
Namespace (computer science)
A namespace is an abstract container or environment created to hold a logical grouping of unique identifiers or symbols . An identifier defined in a namespace is associated only with that namespace. The same identifier can be independently defined in multiple namespaces...
s that allows legacy
Legacy system
A legacy system is an old method, technology, computer system, or application program that continues to be used, typically because it still functions for the users' needs, even though newer technology or more efficient methods of performing a task are now available...
namespaces such as Library of Congress
Library of Congress
The Library of Congress is the research library of the United States Congress, de facto national library of the United States, and the oldest federal cultural institution in the United States. Located in three buildings in Washington, D.C., it is the largest library in the world by shelf space and...
Identifiers and Digital object identifier
Digital object identifier
A digital object identifier is a character string used to uniquely identify an object such as an electronic document. Metadata about the object is stored in association with the DOI name and this metadata may include a location, such as a URL, where the object can be found...
s to be represented as URIs. It acts as a bridging mechanism for older information identifiers to be used in the more generalised and standard URI allocation.
Syntactical specifications
The URI specifications defined by the Internet Engineering Task ForceInternet Engineering Task Force
The Internet Engineering Task Force develops and promotes Internet standards, cooperating closely with the W3C and ISO/IEC standards bodies and dealing in particular with standards of the TCP/IP and Internet protocol suite...
(IETF) separates the info URI scheme’s syntax into two sections: part A, which contains syntactical elements specific to the info scheme, and part B, which follows standard URI definitions. The important info scheme‐specific Part A uses the following URI components:
{| class="wikitable" border="1"
|-
! component name
! component value
|-
| info-URI
| info-scheme ":" info-identifier [ "#" fragment ]
|-
| info-scheme
| "info"
|-
| info-identifier
| namespace "/" identifier
|-
| namespace
| scheme
|-
| identifier
| *( pchar / "/" )
|}
Other specifications
The info URI scheme supports hierarchical processing with a forward slash character ‘/’ (also commonly seen in Uniform Resource LocatorUniform Resource Locator
In computing, a uniform resource locator or universal resource locator is a specific character string that constitutes a reference to an Internet resource....
s), although the character should not be treated as a strict hierarchical delimiter. Its scheme-specific part is an auto-identifier, which is constructed by appending an “identifier” component to a “namespace” component separated by a forward slash.
Namespace authority and the “info” registry
To handle info URI maintenance, the IETF established an “info” URI scheme metadata registryMetadata registry
A metadata registry is a central location in an organization where metadata definitions are stored and maintained in a controlled method.-Use of Metadata Registries:...
. In addition to handling “info” URI maintenance, the organisation allows information assets to benefit from the “info” registry without placing the burden of independent URI registration on the Namespace Authority, which is tasked with general URI management. The Namespace Authority provides that information assets identified within a registered namespace “will be added or deleted according to the business processes of the Namespace Authority”. However, it permits network applications to otherwise use “info” URIs in a standard and open way.
{| class="wikitable"
|+ Selected namespaces
|-
!Namespace
!Resource
|-
|info:arxiv/||arXiv
ArXiv
The arXiv |Chi]], χ) is an archive for electronic preprints of scientific papers in the fields of mathematics, physics, astronomy, computer science, quantitative biology, statistics, and quantitative finance which can be accessed online. In many fields of mathematics and physics, almost all...
identifiers
|-
|info:bibcode/||Astrophysics Data System
Astrophysics Data System
The Astrophysics Data System , developed by the National Aeronautics and Space Administration , is an online database of over eight million astronomy and physics papers from both peer reviewed and non-peer reviewed sources...
bibcode
Bibcode
The bibcode is an identifier used by a number of astronomical data systems to specify literature references. The bibcode was developed to be used in SIMBAD and the NASA/IPAC Extragalactic Database , but is now used more widely, for example, in the NASA Astrophysics Data System...
s
|-
|info:ddbj-embl-genbank/||Sequence records in DDBJ/EMBL/GenBank
GenBank
The GenBank sequence database is an open access, annotated collection of all publicly available nucleotide sequences and their protein translations. This database is produced and maintained by the National Center for Biotechnology Information as part of the International Nucleotide Sequence...
|-
|info:doi/ ||Digital Object Identifier
Digital object identifier
A digital object identifier is a character string used to uniquely identify an object such as an electronic document. Metadata about the object is stored in association with the DOI name and this metadata may include a location, such as a URL, where the object can be found...
s
|-
|info:fedora/ ||Fedora Digital Objects and Disseminations
|-
|info:inchi/ ||IUPAC International Chemical Identifier
International Chemical Identifier
The IUPAC International Chemical Identifier is a textual identifier for chemical substances, designed to provide a standard and human-readable way to encode molecular information and to facilitate the search for such information in databases and on the web...
(InChI)
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|info:lanl-repo/||Identifiers used in the Repository of the LANL Research Library
LANL Research Library
The LANL Research Library is a research library at Los Alamos National Laboratory. It contains a substantial collections of books, journals, databases, patents along with technical reports. Additionally it offers literature searching, training and outreach services...
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|info:lc/ ||Library of Congress
Library of Congress
The Library of Congress is the research library of the United States Congress, de facto national library of the United States, and the oldest federal cultural institution in the United States. Located in three buildings in Washington, D.C., it is the largest library in the world by shelf space and...
Identifiers
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|info:lccn/ ||Library of Congress Control Number
Library of Congress Control Number
The Library of Congress Control Number or LCCN is a serially based system of numbering cataloging records in the Library of Congress in the United States...
s
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|info:ncid/ ||National Institute of Informatics
National Institute of Informatics
The is a Japanese research institute created in April 2000 for the purpose of advancing the study of informatics. This institute is also devoted to creating a system to facilitate the spread of scientific information to the general public. The NII is the only comprehensive research institute in...
NACSIS-CAT Identification Numbers
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|info:netref/ ||NISO
Niso
Niso is a genus of very small parasitic sea snails, marine gastropod mollusks or micromollusks in the family Eulimidae. -Species:According to the World Register of Marine Species the following species with accepted names are included within the genus Niso * Niso aeglees Bush, 1885* Niso albida...
Standard for Network Reference Services
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|info:nla/ ||National Library of Australia
National Library of Australia
The National Library of Australia is the largest reference library of Australia, responsible under the terms of the National Library Act for "maintaining and developing a national collection of library material, including a comprehensive collection of library material relating to Australia and the...
's digital & digitised collections
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|info:oclcnum/ ||OCLC
OCLC
OCLC Online Computer Library Center, Inc. is "a nonprofit, membership, computer library service and research organization dedicated to the public purposes of furthering access to the world’s information and reducing information costs"...
Worldcat
WorldCat
WorldCat is a union catalog which itemizes the collections of 72,000 libraries in 170 countries and territories which participate in the Online Computer Library Center global cooperative...
Control Numbers
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|info:ofi/ ||Registry Identifiers used by the NISO
Niso
Niso is a genus of very small parasitic sea snails, marine gastropod mollusks or micromollusks in the family Eulimidae. -Species:According to the World Register of Marine Species the following species with accepted names are included within the genus Niso * Niso aeglees Bush, 1885* Niso albida...
OpenURL
OpenURL
OpenURL is a standardized format of Uniform Resource Locator intended to enable Internet users to more easily find a copy of a resource that they are allowed to access...
Framework Registry
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|info:pmid/ ||PubMed
PubMed
PubMed is a free database accessing primarily the MEDLINE database of references and abstracts on life sciences and biomedical topics. The United States National Library of Medicine at the National Institutes of Health maintains the database as part of the Entrez information retrieval system...
records
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|info:rlgid/ ||RLG
RLG
RLG is a three-letter acronym that can stand for:* Research Libraries Group* Right Linear Grammar* Ring laser gyroscope* Rostock Laage Airport: IATA airport code* Royal Lao Government...
Database Record identifiers
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|info:sici/ ||Serial Item and Contribution Identifier
Serial Item and Contribution Identifier
The Serial Item and Contribution Identifier is a code used to uniquely identify specific volumes, articles or other identifiable parts of a periodical...
s
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|info:sid/ ||Source Identifiers used in the NISO OpenURL
OpenURL
OpenURL is a standardized format of Uniform Resource Locator intended to enable Internet users to more easily find a copy of a resource that they are allowed to access...
Framework
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|info:srw/ ||Search/Retrieve Web Service
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