Glossary D-I


Character preceding a subfield code of a MARC variable field. On Voyager, the delimiter is presented by a double-dagger (‡); it is often represented in documentation by the dollar sign ($) or a line bar (|).


A mark, like the Spanish tilde (~) or the French grave accent that changes the pronunciation of the letter it modifies. In Voyager, diacritics are entered before or after the letter modified in the Cataloging Module but display above the letter in Web Voyage. Many workstations use MacroExpress software to mimic the keyboard mapping of RLIN or NOTIS for diacritic entry.


Optical disc, e.g. a CD-ROM


Magnetic disk, e.g. a floppy disk

Dublin Core

Dublin Metadata Core Element Set. Standard set of data elements to be filled in by the creator of an electronic document to create a metadata record for the document.


For books, all copies produced from essentially the same type image and issued by the same publisher. YUL policy (as with most research libraries) is to create separate bibliographic records for different editions. (Some exceptions made for multipart sets)

In some European and Latin American publications, cognates of "edition" refer to printing rather than edition so defined; judgment must be exercised in such cases whether to treat as an edition or a printing.


Term used to determine priority of a heading (access point) for citation purposes. A main entry is the heading used for a citation (in combination with the title proper if the title proper is not the main entry). An added entry is any other name, title, or name-title heading used as a controlled access point.


Local Yale program used to warn staff when Voyager records should not be edited and to allow authorized staff to flag records for export to Mars.

filing indicator

A content designator in a machine readable record used to control the filing order of data in a field, usually in order to suppress the initial article of a title in the alphabetical arrangement of the index display and to exclude the article as a search element. For examples:


ixed field

A field whose length is controlled at a pre-set maximum number of characters. For example, country of publication data is restricted to 3 characters; type of publication date is restricted to one character.


Functional Requirements for Bibliographic Records. International standard for bibliographic record content, emphasizing bibliographic relationships in the catalog. Influencing the ongoing revision of AACR2. Often pronounced "furbur."


General Material Designator. Used to designate the broad class of material to which the item belongs. Entered in $h in 245. Not used for books or maps; most commonly used for microform, video, sound recordings, and CD-ROMs.


Standard access point under which the record of a book, serial, etc. may be retrieved and subarranged in the catalog. A heading represented by an authority record is considered to be an "established heading."


Desired result from an online search.


International Federation of Library Associations and Institutions; international body representing the interests of library services and users. An IFLA study group is responsible for the Functional Requirements for Bibliographic Records.


Integrated library system: a library automation package that covers all of the various library functions, e.g. acquisitions, cataloging, circulation, serials control, and the online catalog, using common databases. The YUL ILS is Voyager.


International Standard Bibliographic Description. Source of the punctuation used to demarcate areas and subareas of a standard bibliographic record, e.g. the "space slash space" used to separate the title from the statement of responsibility. Some of the ISBD punctuation separating descriptive areas does not display in Web Voyage; the RLIN LONG display uses full ISBD punctuation.


International Standard Book Number. A four part, ten digit code given to a book before publication as a means of identifying it concisely, uniquely and umambiguously (e.g., 0-123-45678-9). Plans are underway to expand the ISBN to 13 digits. Entered in MARC variable field 020. A key variable field and access point used in database searching and record matching.


International Standard Serial Number. A two part, eight digit code given to a serial before publication as a means of identifying it. A key variable field and access point used in database searching and record matching.


In MARC, numeric codes associated with variable length fields, whose specific meaning depends on the field in which it occurs. See, for example, "filing indicator" above.

integrating resources

A bibliographic resource that is added to or changed by means of updates that do not remain discrete and are integrated into the whole. Integrating resources can be finite or continuing. Examples of integrating resources include updating loose-leafs and updating Web sites.

item record

Principal circulation and inventory record. In Voyager, an item record may or may not be associated with a barcode number.

item type

Field in the Voyager item record that identifies the item's class of material and/or its circulation parameters.


An instance of an integrating resource, either as first published or after it has been updated.