Subject Re: Additional index kinds like R*Tree for Firebird
Author tempo93fr
--- In, "chris.waldmann" <Christian.Waldmann@...> wrote:
> From time to time there are request for support of Geographic Information System (GIS) in firebird. Supporting GIS is based on additional index kinds, additional data types and additional functions for spatial calculations.

there are also other possibilities , not only R*Tree

for example Nested Containment List (NCList)

but also as Mongodb (, using geohash (