A good subfield: Extremely fields incorporate numerous associated bits of analysis. Each kind of data in job is called good subfield , and each subfield was preceded by the an effective delimiter-subfield code integration . Industries 001 courtesy 009 haven’t any subfields.
Instance, the field for your own identity supposed has a subfield for your own title, numeration, headings and you can times from the name, one of several others.
An excellent subfield code: Subfield requirements was one lowercase page (periodically a variety) preceded from the a good delimiter. An effective delimiter is a nature regularly independent subfields. Each subfield code means what type of study comes after they. (Each industry from the MARC 21 authority format, the newest MARC 21 documents listing and you will relates to the latest legitimate subfield rules.)
Throughout the significantly more than example, the fresh new subfield rules is $a private term, $b to own numeration, $c getting headings and other terms for the a name, and $d to own times on the a reputation.
A delimiter: Other programs fool around with various other characters to help you depict the new delimiter into brand new display otherwise on the printouts. Instances is a two fold dagger ( ), an “in the sign” (), a money signal ($), a keen underline ( _ ), or perhaps the graphic icon ” “. In this book brand new money indication ($) is utilized given that delimiter part of the subfield password.
1. The latest expert record stuff.
An expert listing is made for each licensed particular a beneficial supposed. Having names, probably one of the most widely used authority documents ‘s the Collection regarding Congress Label Authority File (or LCNAF). One to document can be used contained in this document having examples. The entire document can be acquired regarding the Cataloging Shipments Services (otherwise Cds) or may be searched for online during the: To own subjects or geographical names, the preferred topic authority document ‘s the LCSH. It is offered by Cds on the net and you may digital setting. There are many almost every other topic supposed lists, including the Sears List of Subject Titles and the Ways and you can Architecture Thesaurus . The form of a subject heading should matches you to in these directories or pursue their regulations to own structure.
Most of the headings are one of the following the sizes: brands , name/title combos , consistent titles , otherwise subjects . Samples of term headings were:
A reputation/name going include both a reputation and you may a name out of a-work. The name portion includes your own, business, conference, or legislation label. The new label section has got the identity for which an item otherwise a series will be understood to possess cataloging purposes. It’s especially employed for classic work which were published less than more headings over the years. An example of a name/name supposed are:
What is a good MARC Power List
An interest heading tends to be just one title, phrase, or a group of terminology. New mark on the topic is based on the original term otherwise words on the heading — thing, genre/function, geographic, chronological, individual title, corporate term, appointment identity, or label. Another terms from the going are in certain subfields you to definitely are known as subdivisions.
MARC 21 power https://kissbridesdate.com/hr/benaughty-recenzija/ facts contain two types of cross records one often lead a person of a keen unauthorized maneuvering to a third party supposed (talking about called “pick records” and make use of 4XX tags) otherwise from authorized heading to a separate (speaking of named “select and recommendations” and employ 5XX tags). Real mix references usually are not carried explicitly within the authority information, however. Alternatively, variant mode and you will relevant headings are “traced” throughout the expert number toward subscribed means. Tracing mix records in the place of making separate authority details having references permits efficient and you may precise display off expert advice by catalogs — and the pages understand the guidance on the setting that’s right for them. Cross reference screens are able to getting created by solutions and this mix brand new contents of a tracing resource field together with 1XX going realm of an archive.