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Database Structure: Geometric_Locality Table
Geometric_Locality
Description:
Name Null? Type
------------------------------- -------- ----
LOCALITY_ID NOT NULL NUMBER
GEOMETRIC_LOCALITY_SUBTYPE VARCHAR2(7)
- Primary Key:
- Locality_ID
- Foreign Key:
- Locality_ID references LOCALITY(Locality_ID)
The geometry of a collecting locality may be described as a
- point: e.g., a specific place on the surface of the earth
- polygon: e.g., a country or a county within a state
- line: e.g., a transect
With our data we have not had the need to implement the option of a line.
The Locality_ID relates Geometric_Locality to the
Locality table. Point and Polygon are subtypes of
Geometric_Locality. Although the data in those two tables appear similar,
for example, latitude and longitude, their interpretation may differ
significantly.
Last updated: 20 November, 1997 by nfj.