A good subfield: Very areas contain several associated pieces of investigation. Every type of data inside industry is named an effective subfield , and each subfield was preceded of the an effective delimiter-subfield password integration . Sphere 001 thanks to 009 do not have subfields.
Including, the field having a personal identity supposed includes an effective subfield for your own identity, numeration, headings and you will times of this identity, one of many others.
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An effective subfield password: Subfield rules are you to lowercase letter (from time to time lots) preceded by good delimiter. An excellent delimiter is actually a characteristics accustomed independent subfields. Each subfield password suggests what sort of research pursue they. (For every occupation in the MARC 21 power format, the fresh new MARC 21 papers listing and you may describes the new good subfield rules.)
About above example, the brand new subfield rules are $a for personal title, $b getting numeration, $c for titles and other conditions of a name, and you will $d to possess schedules of the a name.
A great delimiter: More software programs fool around with additional letters so you can show the fresh new delimiter to the the newest display screen or with the printouts. Examples is a dual dagger ( ), an enthusiastic “from the signal” (), a dollar indication ($), a keen underline ( _ ), or the graphic symbol ” “. Contained in this book the fresh dollars sign ($) is utilized as the delimiter part of the subfield password.
step 1. This new authority record articles.
An expert listing is perfect for each registered types of a beneficial supposed. For names, perhaps one of the most widely used expert documents is the Collection off Congress Name Authority Document (or LCNAF). You to file can be used contained in this document for instances. The entire file can be acquired from the Cataloging Shipment Service (otherwise Cds) or may be searched for online at: Getting information otherwise geographic names, the most used subject expert document is the LCSH. Its available from Dvds in publications and electronic form. There are many different most other topic heading lists, including the Sears Set of Subject Titles and also the Art and you may Architecture Thesaurus . The form of a subject going will be matches you to definitely during these listing otherwise follow its guidelines to own construction.
All titles are one of the after the types: names , name/term combos , uniform titles , or victims . Examples of label headings were:
A name/label supposed includes both a name and you will a name regarding a-work. The name part includes your own, corporate, appointment, otherwise jurisdiction identity. Brand new term section has the label by which an item or a sequence will be recognized to have cataloging objectives. Its specifically employed for classic works that have been had written below some other titles over time. A typical example of a name/name going try:
What exactly is an effective MARC Expert Record
An interest going can be one label, statement, otherwise a group of terms and conditions. The new mark into the subject is founded on the original name or keywords regarding the heading — point, genre/mode, geographical, chronological, individual term, corporate label, conference term, otherwise title. One other terms and conditions in the supposed come into specific subfields that have been called subdivisions.
MARC 21 power records have 2 kinds of get across records you to definitely either head a person from a keen not authorized going to an authorized going (these are entitled “get a hold of references” and use 4XX labels) or from a single licensed heading to a unique (talking about called “pick along with records” and employ 5XX labels). Actual mix recommendations aren’t transmitted explicitly in the authority suggestions, yet not. Instead, variation mode and you can related headings is actually “traced” in the expert record into licensed function. Tracing mix sources rather than to make separate power suggestions to own recommendations permits productive and you may accurate display away from expert guidance by the magazines — together with pages see the guidance on the function that is right for them. Cross reference displays may then feel created by systems and this combine brand new contents of an excellent tracing reference job together with 1XX supposed world of accurate documentation.
