POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
PTY_POPULATION_DENSITY
SUBTYPE OF
(
pty_transient_property
);
data_value :
ndt_per_area
;
leaseable_earth_feature :
OPTIONAL
leaseable_earth_feature
;
technical_earth_feature :
OPTIONAL
technical_earth_feature
;
UNIQUE
si: technical_earth_feature,
process_data
.activity,
pty_transient_property
.end_time,
pty_transient_property
.ref_transient_period,
pty_transient_property
.start_time, leaseable_earth_feature;
END_ENTITY
; (* pty_population_density *)
Generated on Tue Jul 10 19:38:35 2001
© Copyright 2001 POSC. All rights reserved.