Matthias van de Meent <boekewurm+postgres@gmail.com> writes:
> I like the idea of the ZSON type, but I'm somewhat disappointed by its
> current limitations:
I've not read the code, so maybe this thought is completely off-point,
but I wonder if anything could be learned from PostGIS. AIUI they
have developed the infrastructure needed to have auxiliary info
(particularly, spatial reference data) attached to a geometry column,
without duplicating it in every value of the column. Seems like that
is a close analog of what's needed here.
regards, tom lane