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Revision 605

vegbien.sql: Made several pointers to parent elements optional to deal with specimens data that might not have a location, etc.

View differences:

vegbien.for_ERD.sql
172 172
(
173 173
  locationevent_id serial NOT NULL,
174 174
  previous_id integer,
175
  location_id integer NOT NULL,
175
  location_id integer,
176 176
  project_id integer,
177 177
  authoreventcode character varying(30),
178 178
  "... (truncated) ..." integer,
......
192 192
CREATE TABLE taxonoccurrence -- VegBank's taxonobservation table.
193 193
(
194 194
  taxonoccurrence_id serial NOT NULL,
195
  locationevent_id integer NOT NULL,
195
  locationevent_id integer,
196 196
  authorplantname character varying(255),
197 197
  reference_id integer,
198 198
  taxoninferencearea double precision,

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