A beneficial subfield: Really industries contain multiple related items of research. Every type of data in community is named a beneficial subfield , and each subfield is actually preceded by the good delimiter-subfield code combination . Fields 001 by way of 009 do not have subfields.
Like, industry to have an individual term heading is sold with a subfield getting an individual identity, numeration, headings and you can dates on the name, certainly one of many others.
A beneficial subfield code: date hot Balinese girl Subfield rules is one to lowercase letter (occasionally lots) preceded because of the an excellent delimiter. A beneficial delimiter is a characteristics regularly independent subfields. Each subfield password means what sort of analysis pursue they. (For every single industry on MARC 21 power format, new MARC 21 documents listings and you will means the latest good subfield codes.)
About above analogy, the latest subfield requirements is actually $a private name, $b to own numeration, $c to own titles or any other terms and conditions for the a name, and you may $d to own dates with the a name.
A good delimiter: Other applications have fun with various other letters to depict brand new delimiter to the the fresh display or into printouts. Examples is a double dagger ( ), an enthusiastic “at the sign” (), a dollar indication ($), a keen underline ( _ ), or perhaps the artwork icon ” “. In this publication the buck signal ($) is utilized as delimiter portion of the subfield password.
1. The power list content.
An expert list is made for per signed up kind of an excellent going. To have names, one of the most commonly used authority documents is the Library out-of Congress Name Expert File (or LCNAF). One document is utilized within document getting advice. The complete file can be found in the Cataloging Distribution Services (or Cds) or possibly sought after online within: Getting information otherwise geographical names, the best topic authority document is the LCSH. It is supplied by Cds on the net and you will digital setting. There are many different most other topic going lists, including the Sears A number of Subject Headings and Ways and you can Buildings Thesaurus . The type of a topic heading should fits you to during these directories otherwise realize their guidelines to have structure.
All of the headings are among the pursuing the models: names , name/name combos , consistent headings , or victims . Types of identity headings are:
A name/identity supposed contains both a reputation and you will a subject off a work. Title bit include a personal, business, conference, otherwise jurisdiction identity. The fresh term portion contains the title where a product otherwise a sequence will be understood having cataloging motives. It is especially used in vintage really works that happen to be composed under other headings over the years. A typical example of a name/label supposed is actually:
What is a good MARC Power Record
An interest supposed are one title, words, or several terms. The newest mark toward subject is founded on the initial title otherwise keywords regarding supposed — matter, genre/function, geographic, chronological, personal identity, business label, appointment label, or identity. Another terms on heading are in specific subfields you to are called subdivisions.
MARC 21 power suggestions consist of two types of mix records you to definitely possibly direct a person regarding an enthusiastic not authorized going to a third party supposed (these are called “get a hold of records” and use 4XX labels) or from one licensed going to another (talking about named “look for plus records” and rehearse 5XX labels). Genuine mix references are certainly not sent explicitly inside power ideas, not. Rather, variation mode and you may related titles was “traced” on authority number to the signed up setting. Tracing mix recommendations rather than and come up with separate expert info for records allows productive and you may accurate monitor regarding power information from the magazines — together with users see the advice regarding function that is appropriate for all of them. Cross-reference displays can then getting created by options which combine the fresh items in good tracing reference occupation while the 1XX supposed arena of accurate documentation.
