descriptor - 1. An official subject heading used in an index or abstracting service, or in an electronic database. Appropriate descriptors are assigned by an indexer to each work (book, article, essay, dissertation, etc.) based on its content. In the entry which represents the work, the descriptors usually appear in the DE field. For some databases, such as ERIC and PsycINFO, an authorized list descriptors is published in the form of a printed thesaurus. See also: controlled vocabulary.
2. An integer, string or other small data value which refers to one of several objects allocated to a program by the operating system, usually the kernel. A common example is a Unix file descriptor which is a small integer that identifies an I/O channel. Another example is a reference to an area of memory (e.g. shared memory).
; дс тдрлими цюлютдажкию дроемжки аиакиохдйис лидр http://vax.wcsu.edu/library/odlis.html ; http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi;
