POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
PTY_LOCATION_ACCURACY
SUBTYPE OF
(
property
);
confidence_level :
OPTIONAL
ndt_percent_le_100
;
error_length :
OPTIONAL
ndt_length
;
location_quality :
OPTIONAL
ref_location_quality
;
pty_location :
OPTIONAL
pty_location
;
uncertainty_ellipsoid :
OPTIONAL
ndt_point_geometry_uncertainty
;
UNIQUE
si: pty_location,
process_data
.activity;
WHERE
mse99: EXISTS(error_length) XOR EXISTS(uncertainty_ellipsoid);
END_ENTITY
; (* pty_location_accuracy *)
Generated on Tue Jul 10 19:38:30 2001
© Copyright 2001 POSC. All rights reserved.