08/02/84  unpopulate_mrds_db, umdb

Syntax as a command:  umdb database_path {-control_args}


Function:  This command deletes all existing data stored in the given
data base, returning it to the unpopulated state.  It is primarily a
data base application development tool.


Arguments:
database_path
   is the relative or absolute pathname, with or without suffix, of the
   data base that is to have all tuples in all relations deleted.


Control arguments:
-force, -fc
   causes the data to be deleted without querying the user.
-no_force, -nfc
   causes the user to be queried as to whether he really wishes to
   delete all data in the data base as a safety measure against
   inadvertently typing in the wrong data base name.  This is the
   default.


Notes:  Only a DBA can use this command.

If there is no data in the data base, no error will be issued.

The command display_mrds_db_population can be used to check the current
tuple count of the relations.


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Historical Background

This edition of the Multics software materials and documentation is provided and donated
to Massachusetts Institute of Technology by Group BULL including BULL HN Information Systems Inc. 
as a contribution to computer science knowledge.  
This donation is made also to give evidence of the common contributions of Massachusetts Institute of Technology,
Bell Laboratories, General Electric, Honeywell Information Systems Inc., Honeywell BULL Inc., Groupe BULL
and BULL HN Information Systems Inc. to the development of this operating system. 
Multics development was initiated by Massachusetts Institute of Technology Project MAC (1963-1970),
renamed the MIT Laboratory for Computer Science and Artificial Intelligence in the mid 1970s, under the leadership
of Professor Fernando Jose Corbato. Users consider that Multics provided the best software architecture 
for managing computer hardware properly and for executing programs. Many subsequent operating systems 
incorporated Multics principles.
Multics was distributed in 1975 to 2000 by Group Bull in Europe , and in the U.S. by Bull HN Information Systems Inc., 
as successor in interest by change in name only to Honeywell Bull Inc. and Honeywell Information Systems Inc. .

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Permission to use, copy, modify, and distribute these programs and their documentation for any purpose and without
fee is hereby granted,provided that the below copyright notice and historical background appear in all copies
and that both the copyright notice and historical background and this permission notice appear in supporting
documentation, and that the names of MIT, HIS, BULL or BULL HN not be used in advertising or publicity pertaining
to distribution of the programs without specific prior written permission.
    Copyright 1972 by Massachusetts Institute of Technology and Honeywell Information Systems Inc.
    Copyright 2006 by BULL HN Information Systems Inc.
    Copyright 2006 by Bull SAS
    All Rights Reserved