POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
NTS_LEGAL_SURVEY_AREA
(* Local *)
SUBTYPE OF
(
legal_survey_area
);
block :
OPTIONAL
ndt_code1
;
letter_quadrangle :
OPTIONAL
ndt_code1
;
primary_quadrangle :
OPTIONAL
ndt_pint1
;
quarter_unit :
OPTIONAL
ndt_code1
;
sixteenth :
OPTIONAL
ndt_pint1
;
unit :
OPTIONAL
ndt_pint1
;
UNIQUE
si:
earth_feature
.identifier,
earth_feature
.unique_within;
END_ENTITY
; (* nts_legal_survey_area *)
Generated on Tue Jul 10 19:38:07 2001
© Copyright 2001 POSC. All rights reserved.