[OSM-talk] On how to store geospatial data !?;

Nick Hill nick at nickhill.co.uk
Sun Jan 14 18:16:46 GMT 2007


Martin Spott wrote:

> What do you mean exactly ? 

It appears you have had experience at storing and retrieving large amounts of 
geodata in databases. If that is the case, I am interested in your opinion and 
experience in storing and retrieving data. The types of storage formats end 
engines you have used.

For example,

Do you typically store polygons as an ordered list of nodes or as a geo data type?

Do you store linear features as an ordered list of nodes, as a series of 
segments, or as a higher level data type?

If you store nodes, what format do you store them in? eg tile or lat/lon or as a 
tiny rectangle.

Have you had experience of the type of database load like osm, where many 
asynchronous queries for semi-random areas need to be served?





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