/*  BEGIN  mdbm_rm_attr_info.incl.pl1  --  jaw,  11/16/78  */

/* WARNING
          If the rm_attr_info structure is changed then the mrds_data_
          item saved_res_version MUST be incremented to invalidate all
          existing saved resultants
*/

/*

   Modified  by  Jim  Gray - - 80-11-05, to add mdbm_secured bit, so
   that rm_rel_info does not have to be checked

   81-05-28 Jim Gray  :  removed  structure  elements  referring  to
   foreign keys.

   82-08-19  D. Woodka : removed rm_attr_info.bit_offset for the DMS
   conversion.

   82-09-15 Davids: added the number_of_dups field.

   82-09-20 Mike Kubicar : changed the index_id field to be bit (36)
   aligned.  This is to conform with the new definition in the database
   model.  Also removed the now useless field varying.

   82-11-05 Davids: added the field model_defn_order and clarified the
   comment for the field defn_order.

   83-05-23 Mike Kubicar : changed number_of_dups to fixed bin (35) since
   that's what relation manager returns.

*/


/*
   this   structure   is   allocated   in   the   static   area   of
   mdbm_rm_db_info.incl.pl1  once for each attribute per relation in
   a     readied     file.      it     in     turn     points     to
   mdbm_rm_domain_info.incl.pl1  for  the  attributes  domain.   the
   rm_attr_info  is  pointed  to  by mdbm_rm_rel_info.incl.pl1.  all
   structures  are  in  the  rm_db_info  area.   the  attribute data
   position  within  a  tuple as stored in the data file are kept in
   this resultant model of the attribute.
 */

dcl 1 rm_attr_info aligned based (rai_ptr),		/* resultant attr. info */
    2 name char (32),				/* from submodel */
    2 model_name char (32),				/* from model */
    2 key_attr bit (1) unal,				/* if key attribute */
    2 index_attr bit (1) unal,			/* if secondary index */
    2 read_perm bit (1) unal,				/* user has retr. permission */
    2 modify_perm bit (1) unal,			/* user has modify permission */
    2 mdbm_secured bit (1) unal,			/* on => database secured */
    2 reserved bit (30) unal,				/* for future use */
    2 index_id bit (36) aligned,			/* index id if index_attr */
    2 defn_order fixed bin,				/* relative order in which attr is defined in the view */
    2 key_order fixed bin,				/* relative order defined in prim. key */
    2 bit_length fixed bin (35),			/* length if fixed, max. len. if var. */
    2 domain_ptr ptr,				/* to domain info */
    2 number_of_dups fixed bin (35),                        /* if the attribute is indexed this will
                                                               be the number of duplicate values, exact
                                                               for a page_file database, an estimate for a vfile type */
    2 model_defn_order fixed bin;                           /* relative order in which attr is defined in the model */

dcl  rai_ptr ptr int automatic init (null ());

/* END mdbm_rm_attr_info.incl.pl1 */




*/
                                          -----------------------------------------------------------


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. .

                                          -----------------------------------------------------------

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

*/