资料来源 : pyDict

关键字域

资料来源 : Free On-Line Dictionary of Computing

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}".
     
        (1997-08-03)