POSC Specifications Version 2.2

Epicentre Logical Data Model

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ENTITY SEISMIC_ACQUISITION_VERTEX

SUBTYPE OF (technical_object, earth_surface_point);

node_name : OPTIONAL ndt_name;
node_uid : OPTIONAL ndt_user_unique_identifier;
ref_seismic_acquisition_vertex : ref_seismic_acquisition_vertex;
seismic_geometry_set : seismic_geometry_set;

INVERSE

pty_location_2d : SET [0:?] OF pty_location_2d FOR seismic_acquisition_vertex;

UNIQUE

si: seismic_geometry_set, node_uid, node_name, ref_seismic_acquisition_vertex;

WHERE

val: EXISTS(node_uid) XOR EXISTS(node_name);

END_ENTITY; (* seismic_acquisition_vertex *)

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Generated on Tue Dec 9 09:50:40 1997
© Copyright 1997 POSC. All rights reserved.