POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
PTY_GRID_CONVERGENCE
SUBTYPE OF
(
property
);
data_value :
ndt_plane_angle
;
local_coordinate_system :
OPTIONAL
general_coordinate_system
;
projected_2d_coordinate_system :
OPTIONAL
projected_2d_coordinate_system
;
vertex :
vertex
;
UNIQUE
si: vertex, local_coordinate_system, projected_2d_coordinate_system,
process_data
.activity;
WHERE
mse: EXISTS(local_coordinate_system) XOR EXISTS(projected_2d_coordinate_system);
END_ENTITY
; (* pty_grid_convergence *)
Generated on Tue Jul 10 19:38:28 2001
© Copyright 2001 POSC. All rights reserved.