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descriptor
{i} (in database management) key word used to identify sort and unite data records
A standardized term used to describe the subject content of an item in a database See also subject heading
Structure that contains information describing a volume or file
A simple word or phrase used as a subject
A word or a group of words used as a subject to describe the content in books, articles, and other materials for the purpose of indexing or organizing these items by topic As an important element of effective research, descriptors are needed to determine the correct headings for a specific database or catalog See also subject heading and thesaurus
For the purpose of this workbook, a descriptor is a term used in indexes that means subject heading
the name of a category of data in an information storage and retrieval system
A controlled vocabulary or thesaurus term used as a subject heading to describe the content of a reference
Some elements exist simply to modify the properties of an existing element or mathematical object For example the declare construct is used to reset the default attribute values, or to associate a name with a specific instance of an object These kinds of elements are referred to as descriptors and the type of the resulting object is the same as that of element being modified, but with the new attribute values
Often used in conjunction with a coined/fanciful, arbitrary, or suggestive name, a descriptor literally describes the product or service being identified A brand name used with a variety of descriptors across a product line is often a more economic strategy than that of giving every product or service its own proprietary name
Term or symbol used to designate the subject of a work Descriptors are generally used when searching electronic indexes
A word or phrase used as a subject heading It is part of a controlled vocabulary used for a specific database Compare with Subject Headings, Keyword Searching
A word or words which have been selected to describe subject content Interchangeable with "subject heading"
an indexing term or symbol used to designate the subject of a work Descriptors are generally used when searching computerized indexes (see Subject Heading)
Some electronic databases, such as ERIC and PsycINFO, publish their own list of subject headings (known as "descriptors") in the form of a thesaurus Appropriate descriptors are assigned to a specific work (book, article, essay, dissertation, etc ) based on what it is "about" and usually appear in the DE field of the bibliographic record which represents it in the database
a piece of stored information that is used to identify an item in an information storage and retrieval system
A word that describes the subject of an article or book; used in many computer databases (See also Controlled Vocabulary , Subject Heading)
Terms used in indexes, abstracts, or other databases/periodical indexes to describe the subjects of an article; sometimes called subject headings
A subject heading assigned to a topic in an indexing system
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