A good subfield: Really areas include multiple related pieces of investigation. Each kind of information during the job is called a subfield , and each subfield is preceded from the a beneficial delimiter-subfield password integration . Sphere 001 owing to 009 haven’t any subfields.
Such as for instance, the field for an individual name going comes with an excellent subfield to have a personal title, numeration, titles and you can times in the identity, among many others.
An excellent subfield code: Subfield codes was that lowercase page (occasionally a variety) preceded from the a delimiter. Good delimiter was a nature always separate subfields. For each and every subfield code implies what sort of analysis employs it. (For each and every occupation from the MARC 21 power format, brand new MARC 21 documents directories and you may refers to this new appropriate subfield requirements.)
On significantly more than example, the newest subfield rules try $a for personal label, $b to own numeration, $c having headings or other words in the a reputation, and you will $d to possess schedules for the a reputation.
A great delimiter: Some other applications explore additional characters so you can show new delimiter toward the fresh new screen or into printouts. Advice try a double dagger ( ), a keen “during the sign” (), a money indication ($), an underline ( _ ), and/or artwork icon ” “. Inside guide the newest money sign ($) is utilized since delimiter part of the subfield code.
step 1. The brand new authority record stuff.
An authority listing is good for for every single registered kind of an effective supposed. To have brands, one of the most commonly used expert files ‘s the Collection regarding Congress Name Power Document (otherwise LCNAF). You to definitely document is utilized within file to own advice. The complete document can be obtained on the Cataloging Shipping Provider (otherwise Cds) or may be wanted free online within: To own topics otherwise geographical labels, typically the most popular subject expert document ‘s the LCSH. Its supplied by Cds in print and you can digital means. There are various most other topic heading listings, for instance the Sears Directory of Subject Headings additionally the Ways and you can Architecture Thesaurus . The form of an interest supposed is match that within these lists otherwise follow its laws and regulations to have design.
All of the headings are among the following the products: labels , name/identity combos , consistent headings , or sufferers . Examples of label titles https://kissbridesdate.com/fi/puertoricolaiset-naiset/ is:
A name/name going include both a reputation and you will a name regarding a work. Title piece consists of your own, business, conference, or jurisdiction name. The latest identity bit has got the term in which an item otherwise a sequence is usually to be understood to own cataloging purposes. It is especially used for antique really works which have been typed below other headings through the years. A good example of a name/label going is:
What is a beneficial MARC Expert List
A topic heading are just one title, terminology, otherwise a group of terminology. The new level to the subject will be based upon the initial title otherwise terminology regarding the supposed — thing, genre/form, geographical, chronological, individual term, business name, appointment identity, otherwise title. Additional conditions on supposed come in specific subfields you to definitely are called subdivisions.
MARC 21 authority details consist of 2 kinds of cross recommendations you to definitely often head a person from an enthusiastic unauthorized going to a 3rd party supposed (talking about named “discover sources” and make use of 4XX labels) or from licensed heading to a different (talking about named “look for and records” and employ 5XX labels). Actual get across recommendations usually are not sent explicitly from inside the authority facts, however. Alternatively, version function and you will relevant titles is “traced” regarding the power checklist for the signed up mode. Tracing get across records in lieu of to make separate power records having sources allows effective and you can right display screen off expert pointers by catalogs — as well as the users understand the suggestions about form that is suitable for all of them. Cross-reference displays may then getting from possibilities and that mix this new contents of a great tracing resource field and the 1XX supposed realm of accurate documentation.