Document Actions
Identifier
IDENTIFIER |
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Label |
Identifier |
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1.1 URL, 1.2 URN, 1.3 DOI,, 1.4 ISBN, 1.5 ISSN, 1.6 OCLC No., 1.7 Report No., 1.8 Government Document No, 1.9 Accession or Local Control No., 1.10 UNT Catalog No., 1.11 RISM No., 1.12 Call No., 1.13 Other Identifier |
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UNTL Definition |
A unique identifier or "permanent name" for a resource that identifies it uniquely and persistently |
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Comment |
Recommended best practice is to identify the resource by means of a string or number conforming to a formal identification system. An identifier for an object that identifies it uniquely, enables links to metadata about it, and to other objects related to it. The sub- element value (identifier type) should be selected from a controlled vocabulary. The sub-elements record different kinds of identifiers including pointers to the metadata information in the local system and ensure that individual digital objects can be managed, stored, recalled and used reliably. |
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Required |
Mandatory |
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Repeatable |
Yes |
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Data Type |
String |
Identifier Type |
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1.1 URL |
Definition: |
Uniform Resource Locator: The global address of documents and other resources on the World Wide Web. The first part of the address indicates what protocol to use, and the second part specifies the IP address or the domain name where the resource is located. |
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Example: |
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1.2 URN |
Definition: |
Uniform Resource Name: A particular scheme, urn:, specified by RFC2141 and related documents, intended to serve as persistent, location-independent, resource identifiers. A URI that has an institutional commitment to persistence, availability, etc. Note that this sort of URI may also be a URL. See, for example, PURLs |
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Example: |
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1.3 DOI |
Definition: |
Digital Object Identifier, the opaque string used as an identifier by the DOI System. DOIs may be used to identify any intellectual property entity, including those already identified by systems such as ISBN. |
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Example: |
10.1002/meet.1450400197 |
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1.4 ISBN |
Definition: |
The ISBN (International Standard Book Number) is a unique machine-readable identification number, which marks any book unmistakably. This number is defined in ISO Standard 2108. Note that the ISBN-13 would be valid from January 2007 onwards, and the most up-to-date version of the ISBN Users Manual available at: http://www.isbn-international.org . |
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Example: |
0791035498 |
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1.5 ISSN |
Definition: |
The ISSN (International Standard Serial Number) is an eight-digit number which identifies periodical publications as such, including electronic serials. More than one million ISSN numbers have so far been assigned. |
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Example: |
10785578 03624781 |
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1.6 OCLC No. |
Definition: |
The Online Computer Library Center (OCLC) is an online cataloging system shared by libraries worldwide, and an "OCLC number" is a unique identifying number attached to all records in the OCLC cataloging and interlibrary loan database. In WorldCat, the "OCLC number" is called the Accession Number. |
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Example: |
5472632 |
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1.7 Report No. |
Definition: |
A publisher-supplied number identifying a report-- usually within a series of similar reports. The report number will normally be found on the title page, documentation page, and/or cover of a report. The number may be a standard technical report number formulated to the ANSI/NISO Z39.23standard, or a less standardized number designed to work within an organizational scheme of the issuing agency's publications. |
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Example: |
ISRN METPRO/ERR-26715 IB10038 |
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1.8 Government Document No. |
Definition: |
A unique identifier which designates documents published by government agencies. This element may contain Superintendent of Documents Classification (SuDoc) numbers for federal documents, or Texas Document Classification (TxDoc) numbers for Texas state documents. |
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Example: |
Y 10.2:M 33 / R65/1986 HE 20.6209/3:167 Z UA220.1 P96 1992 C3400.5 P758 |
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1.9 Accession Local Control No. |
Definition: |
Other pointers to the metadata in the local system. Most commonly, these will be accession numbers assigned by a museum, archive, or special collection, or local numbers used by a collector to identify elements of his or her collection. (For Call numbers, see "1.12 Call No."). |
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Example: |
Y2010 5.0053a |
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1.10 UNT Catalog No. |
Definition: |
A unique identifier within the UNT Libraries' online catalog system. From the current III catalog, the bibliographic record number will be used. |
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Example: |
b14791262 |
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1.11 RISM No. |
Definition: |
A unique identifier within Répertoire International des Sources Musicales (RISM), the International Inventory of Musical Sources. |
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Example: |
1570-12 C 4287 D 3941 |
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1.12 Call No. |
Definition: |
An alphanumeric code assigned to each item in the library to determine its subject and indicate its location on the shelves. At UNT, for example, Library of Congress (LC) or Dewey call numbers associated with our catalog are placed in the "Call No." sub-element. [NB:. Considering the local uniqueness of Call No., (and to reinforce global uniqueness) we recommend to use it in conjunction with other identifiers.] |
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Example: |
G4030 1852.Y67 1852 |
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1.13 Other Identifier |
Definition: |
Other types of identifiers not specified in sub-elements 1.1-1.12. |
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Example: |
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Input guidelines:
Best practices
- Identify the resource by means of a unique string or number conforming to a formal identification system. Representative formal identification systems include the Uniform Resource Identifier (URI), the Digital Object Identifier (DOI), and the International Standard Book Number (ISBN).
- Provide additional identifiers as needed to more fully describe the resource and to facilitate local access.
- For electronic resources accessible via the worldwide web, include the Uniform Resource Locator (URL) in addition to any formal or local identifying numbers.
Formulation
- Use separate identifier elements to enter multiple identifiers and indicate the type of identifier (e.g. ISBN, Local Control Number, etc.) from the drop box in the metadata entry form. If a controlled term for the correct scheme is not present, use "Other Identifier" and, if necessary, notify the system administrator so that s/he can add a new controlled term to the list.
- Input international standard numbers (ISBN, ISSN) without hyphens or spaces.
- In a shared metadata environment, numbers unique within an institution's digital collection (e.g., accession numbers) should also include the name or a code for the institution along with the number, in case another participating institution also uses the same "unique" identifier.
Uses
- Identifiers provide information needed to retrieve a file from the storage system, or to access a bitstream within a file.
- If possible, use the identifier as the file-naming basis for the digital object. For multi-piece, multi-part digital objects such as each individual page image of a scanned text, best practice is to identify each page image with a predictable naming scheme locally, but to share one metadata record for the text as a single, whole resource.
- Identifiers provide a convenient way to refer to an object when utilizing the Relation element or the Note element of the metadata schema. For example, the descriptive metadata record for the photograph "2804 N. Elm and Orr St[reet]," local control number 6.0018b, contains this note: "Other photographs of this site are available in Mr. Goin's collection at 4.0122b and 4.0123a."
- Placing a URL in the identifier element creates
a link from the Portal to an external resource on a web site, HTML page, etc.
The URL can also be added to a library catalog's MARC record (856 field) to
provide a link from the catalog to a digital object.