POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
COORDINATE_TRANSFORMATION
ABSTRACT SUPERTYPE OF
(
ONEOF
(
geodetic_transformation
,
map_projection
))
SUBTYPE OF
(
aliasable_technical_reference
);
source_offset_unit :
OPTIONAL
ref_unit_of_measure
;
target_offset_unit :
OPTIONAL
ref_unit_of_measure
;
INVERSE
coordinate_transformation_aoi :
SET [0:?] OF
transformation_earth_usage
FOR
coordinate_transformation;
parameter_value :
SET [0:?] OF
transformation_parameter_value
FOR
transformation;
WHERE
val: (EXISTS(source_offset_unit) AND EXISTS(target_offset_unit)) OR ((NOT EXISTS(source_offset_unit)) AND (NOT EXISTS(target_offset_unit)));
END_ENTITY
; (* coordinate_transformation *)
Generated on Tue Jul 10 19:37:41 2001
© Copyright 2001 POSC. All rights reserved.