POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
PTY_SEA_STATE
SUBTYPE OF
(
pty_transient_property
);
platform :
OPTIONAL
platform
;
potential_field_platform :
OPTIONAL
potential_field_platform
;
ref_north_axis_direction :
OPTIONAL
ref_north_axis_direction
;
swell_azimuth :
OPTIONAL
ndt_azimuth
;
swell_compass_direction :
OPTIONAL
ref_compass_point
;
swell_height :
OPTIONAL
ndt_length
;
swell_period :
OPTIONAL
ndt_time_second
;
wave_azimuth :
OPTIONAL
ndt_azimuth
;
wave_compass_direction :
OPTIONAL
ref_compass_point
;
wave_height :
OPTIONAL
ndt_length
;
wave_period :
OPTIONAL
ndt_time_second
;
UNIQUE
si:
pty_transient_property
.end_time,
pty_transient_property
.ref_transient_period,
pty_transient_property
.start_time, platform,
process_data
.activity, potential_field_platform;
END_ENTITY
; (* pty_sea_state *)
Generated on Tue Jul 10 19:38:39 2001
© Copyright 2001 POSC. All rights reserved.