I t try impossible today to learn a library diary, attend a collection meeting, otherwise possess a laid-back speak to most other librarians meet hot single women without hearing the fresh new phrases « MARC structure, » « MARC facts, » otherwise « MARC-suitable. » Many collection positives have not had the opportunity to grab specialized programs describing the key subjects from library automation plus the character away from MARC, yet , automated collection systems are an integral part of its libraries.
It booklet will explain — throughout the simplest terms you’ll be able to — what an excellent MARC listing is, and it will surely deliver the basic suggestions had a need to learn and you will view a good MARC authority listing. A companion document, Wisdom MARC Bibliographic, focuses on the new MARC bibliographic list.
Precisely what does MARC Imply?
Machine-readable: « Machine-readable » ensures that a computer, is also comprehend and you may translate the information and knowledge in the a record. Next profiles will explain as to why this is important and how it is made possible.
Cataloging number: Cataloging records are in two types: 1) Bibliographic info, containing factual statements about a text, serial, sound recording, videorecording, etc., and you will dos) Authority information, that contain standard forms getting names, titles, and sufferers which might be used on bibliographic ideas and offer get across references in magazines. Information MARC Bibliographic relates to the first kind of, which booklet identifies another.
MARC Expert List: MARC power details contain the standard kinds of brands for all those, corporate regulators (such as for example, communities, organizations, institutions, etc.), group meetings, headings, and you can subjects. In this way, expert information bring expert control . Expert handle form starting a respected setting getting an entity name and making use of one to function whenever the name’s called for due to the fact an entry point from inside the a great bibliographic record.
Instance, for those who checked on your library’s on line collection with the well-known book, « The brand new Escapades off Tom Sawyer, » by Mark Twain, you can access another bibliographic record screen:
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The writer and you will Subject entries (showcased a lot more than) was controlled, approved different title and you will subject titles that will be found in independent expert suggestions and you can made use of once the availableness products on bibliographic checklist.
Instead of expert handle, in search of sort of instructions within the a large library index will be such as for instance looking for a beneficial needle into the a good haystack!
It is very important note that brand new components out of a name, otherwise subject heading during the an authority record is based on essentially approved cataloging and you can thesaurus-strengthening conventions. The fresh MARC 21 expert checklist merely retains or deal these titles for use into the library systems. Ergo, it doesn’t alone put the rules to own creating label otherwise subject headings.
It is very crucial that you remember that instead of bibliographic info, expert information don’t portray content in a great library’s collection. Instead, he could be units employed by librarians to attain structure among bibliographic information and offer a linking construction to possess associated names and you can sufferers within the a directory — thus organizing this new list to greatly help pages in finding information.
1) Headings, 2) Mix sources, and you will step three) Cards. (MARC expert info usually also consist of addiitional information.) Regardless of if such portion is demonstrated briefly lower than, they are discussed regarding remainder of which booklet.
1) Heading: Brand new standardized « authoritative » kind of a name, subject, otherwise identity that is used having accessibility facts with the bibliographic details. The intention of having fun with standard labels and you will subjects on the bibliographic facts is always to assist associated ideas getting retrieved to each other.
2) Get across references: Sources one direct a person away from a variation kind of a good label or subject to the specialized setting (this is certainly entitled a have resource) or from specialized function to some other certified mode because they was pertaining to one another (this is entitled a have plus site). Having MARC power ideas, the fresh recommendations are carried otherwise « traced » on listing for the certified heading.