key field - A field of a database (typically a relational database) table which together form a unique identifier for a record (a table entry). The aggregate of these fields is usually referred to simply as "the key".
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дс тдрлими цюлютдажкию дроемжки аиакиохдйис лидр
http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi;
