POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
TECHNICAL_EARTH_FEATURE
ABSTRACT SUPERTYPE OF
(
ONEOF
(
damage_area
,
discovery_area
,
exploration_area
,
field
,
geodetic_zone
,
geographic_feature
,
geologic_province
,
geophysical_acquisition_area
,
geopolitical_border
,
geopolitical_boundary
,
legal_survey_feature
,
magnetic_polarity_zone
,
regulatory_area
))
SUBTYPE OF
(
earth_feature
);
INVERSE
pty_avg_earth_surface_elev :
SET [0:?] OF
pty_avg_earth_surface_elev
FOR
technical_earth_feature;
pty_geothermal_gradient :
SET [0:?] OF
pty_geothermal_gradient
FOR
technical_earth_feature;
pty_population :
SET [0:?] OF
pty_population
FOR
technical_earth_feature;
pty_population_density :
SET [0:?] OF
pty_population_density
FOR
technical_earth_feature;
END_ENTITY
; (* technical_earth_feature *)
Generated on Tue Jul 10 19:39:11 2001
© Copyright 2001 POSC. All rights reserved.