POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
GEOPHYSICAL_OFFLINE_DATA
SUBTYPE OF
(
report_specification
);
data_set :
OPTIONAL
geophysical_data_set
;
geometry_set :
OPTIONAL
geophysical_geometry_set
;
UNIQUE
si:
document_specification
.identifier, geometry_set, data_set;
WHERE
mse: EXISTS(geometry_set) XOR EXISTS(data_set);
END_ENTITY
; (* geophysical_offline_data *)
Generated on Tue Jul 10 19:37:58 2001
© Copyright 2001 POSC. All rights reserved.