Good subfield: Most areas contain several relevant pieces of data. Every type of information within the field is named good subfield , and every subfield is preceded of the a beneficial delimiter-subfield code combination . Areas 001 using 009 haven’t any subfields.
Such as for instance, the field to possess a personal label going includes a subfield to own your own label, numeration, titles and you can schedules associated with the label, certainly one of many others.
A great subfield password: Subfield codes was one to lowercase page (periodically a number) preceded by a great delimiter. A delimiter is a character always independent subfields. For each subfield code suggests what kind of studies comes after they. (For each community regarding MARC 21 authority format, new MARC 21 documents listings and you may identifies the brand new good subfield rules.)
In the a lot more than example, this new subfield rules try $a for personal identity, $b to possess numeration, $c to have headings or other terms and conditions with the a name, and you can $d to own times from the a name.
Good delimiter: Additional software programs have fun with some other characters so you’re able to portray the fresh new delimiter into the new monitor otherwise on the printouts. Advice try a two fold dagger ( ), a keen “within sign” (), a buck indication ($), an enthusiastic underline ( _ ), or the graphic symbol ” “. Within guide the dollar indication ($) is employed because delimiter portion of the subfield code.
1. The fresh new expert list blogs.
An expert listing is made for for every single licensed style of a heading. To have labels, probably one of the most popular power documents ‘s the Collection off Congress Title Authority Document (or LCNAF). That file is utilized inside file to own examples. The whole document is available regarding the Cataloging Shipments Solution (or Dvds) or possibly wanted free online during the: To possess information otherwise geographic labels, the most famous topic power file ‘s the LCSH. It’s available from Cds in publications and you may electronic mode. There are many different most other subject supposed listings, such as the Sears Listing of Subject Titles while the Ways and you can Structures Thesaurus . The form of an interest heading should match you to definitely in these listings or pursue the rules to have framework.
All headings are one of the after the versions: labels , name/title combos , consistent headings , otherwise victims . Samples of identity headings are:
A reputation/label supposed includes each other a name and you can a subject away from a work. Title section consists of your own, business, conference, or legislation identity. The newest identity part has got the term where something otherwise a sequence is to be known to own cataloging aim. It is specifically employed for vintage really works that happen to be composed less than some other titles over the years. An example of a name/name going is:
What is an excellent MARC Authority List
A topic going is generally an individual term, terms, otherwise a team of conditions. The tag on the subject is dependant on the original term otherwise keywords from the going — thing, genre/setting, geographical, chronological, private name, corporate name, meeting name, otherwise identity. Others terms from the going come in certain subfields one to have been called subdivisions.
MARC 21 expert information have 2 kinds of get across recommendations that gorgeous nicaraguan women both direct a person out-of an enthusiastic not authorized maneuvering to an authorized supposed (talking about called “see sources” and employ 4XX tags) otherwise from just one subscribed heading to a unique (speaking of called “select and additionally recommendations” and make use of 5XX labels). Genuine cross sources usually are not transmitted clearly inside expert info, although not. Instead, version mode and related headings are “traced” about expert list into signed up setting. Tracing mix records instead of and work out separate authority information getting recommendations enables efficient and you can real screen off authority recommendations because of the catalogs — and also the profiles see the guidance on the form which is suitable for them. Cross-reference screens are able to be made by expertise hence mix the belongings in good tracing reference profession and 1XX heading field of a record.
Last Updated on November 27, 2024 by Bruce