Command language
A command language is a designation of the commands (as
well as their syntax) used by searching electronic
databases.
For example, the command for terminating a search session in a given system may
be
end,
stop,
logoff,
logout,
quit,
farvel
...
This plentitude of possibilities make database searches
complicated. An attempt to cope with this problem is to try to standardize
command languages
(CCL: Common Command Language).
An example of syntax in command languages is the former system RCLIB's display
command: Vis s1; f3; r1
til 20. It is a part of this syntax that the parameters are separated by
semicolon and that their order are arbitrary. For the command language and
syntax of major database host see pocket guide for Dialog.
See also: CCL;
Query_Question
Birger Hjørland
Last edited: 18-01-2006