- An electronic device that provides an interface in the transmission of data to a remote station.
- A collection of related data records on a computer-readable medium, such as a disk.
(1) A collection of interrelated data. Originating in the mainframe community, the term is used today as a generic description of a database, which may include multiple tables. It may also refer to some other data structure and sometimes to a single file or collection of files. See database and file.
(2) A data set is a telephone modem in earlier AT&T terminology.