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Понедельник, Декабрь 2nd, 2024

Good subfield: Very fields incorporate multiple relevant pieces of analysis. Each type of information in occupation is called a great subfield , each subfield are preceded because of the good delimiter-subfield password integration . Fields 001 owing to 009 have no subfields.

For example, the field having an individual label heading boasts a great subfield having your own term, numeration, headings and you will dates associated with identity, certainly several others.

An effective subfield password: Subfield codes are that lowercase letter (periodically a variety) preceded by the a good delimiter. An effective delimiter was a characteristics always independent subfields. For every subfield code indicates what type of investigation comes after it. (Each career throughout the MARC 21 expert style, new MARC 21 paperwork lists and makes reference to the brand new valid subfield codes.)

From the significantly more than example, the brand new subfield rules try $a private term, $b for numeration, $c to possess titles or other conditions of this a name, and you will $d for dates regarding the a reputation.

Good delimiter: Additional software packages use some other letters so you’re able to depict this new delimiter for the the display or towards printouts. Advice is actually a double dagger ( ), a keen «within indication» (), a buck indication ($), an underline ( _ ), or the artwork icon » «. Within this publication brand new dollar signal ($) can be used due to the fact delimiter part of the subfield code.

step 1. The newest power checklist articles.

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An expert record is perfect for for each authorized sort of good going. To possess labels, perhaps one of the most commonly used expert records is the Collection of Congress Label Power Document (or LCNAF). One to document is utilized within file to have advice. The complete document can be found regarding Cataloging Shipping Provider (or Cds) or may be sought after online during the: Getting subjects or geographic names, the best topic power document is the LCSH. It is available from Dvds on the net and you will digital mode. There are various other Oklahoma, PA brides topic going lists, such as the Sears Selection of Subject Headings additionally the Ways and Tissues Thesaurus . The type of an interest supposed is always to fits one during these lists or realize its legislation getting construction.

Every headings are among the following types: labels , name/name combos , consistent headings , or victims . Examples of term headings become:

A reputation/name supposed consists of both a reputation and a name regarding a-work. Title bit include your own, corporate, meeting, otherwise legislation title. The newest identity part provides the title by which a product or service otherwise a series is to be understood to own cataloging intentions. Its particularly employed for vintage work that have been had written less than different headings over time. A typical example of a name/identity supposed is:

What’s a great MARC Expert Number

A subject going can be one label, words, or a team of terms and conditions. The brand new mark to the subject lies in the original identity otherwise words on heading — topic, genre/means, geographic, chronological, individual label, business identity, appointment title, otherwise term. Others words on the supposed are in specific subfields one are known as subdivisions.

MARC 21 authority information include two types of get across references one often lead a user away from an enthusiastic unauthorized going to an authorized heading (talking about entitled «get a hold of records» and rehearse 4XX tags) otherwise from 1 registered maneuvering to an alternative (these are named «discover and recommendations» and make use of 5XX tags). Actual get across recommendations are generally not carried explicitly from inside the authority facts, although not. Rather, variant mode and you will associated titles is «traced» from the expert checklist to the licensed setting. Tracing mix references in place of and work out separate power information for records permits efficient and you can particular monitor out-of power suggestions by the magazines — additionally the profiles understand the advice on means that’s appropriate for all of them. Cross-reference displays can then end up being from assistance and therefore combine the newest items in a beneficial tracing resource career together with 1XX supposed realm of an archive.

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