Yes, there is a great solution,  

take a look at PostGIS:  http://www.postgis.org/

It shurely will do all you want with geodata, but perhaps not as simple as you like...

bye...

Ludwig 

Hello,

I have a lot of GeoData( Latitude and Longitude ) in my PostgreSQL Database. Is store them as numeric at this time.
But now I want to access the data and want to have all Datasets around a Geographic point. eg: "within a radius of 5 km"...

Is there a simple way to do something like this?

Thanks for your Help,
Stefan Sturm