Can't speak particully for Google, imagine it's based on their BigTable database.
However in general data can be held in any ol' database - or even flat files, eg csv, KML. If you have large quantities of data the trick is having a spatially aware index. For medium size datasets can probably get away with normal numerical indexes on the database. But for bigger sets need a proper 2D/3D index. Again what you use depends largely on what database technology you have available - most databases can be spatially enabled. (just different ones have varying levels of difficultly) 2010/1/16 enrico <[email protected]>: > Hello. > Google Maps, but also Google Earth and many other system, using the > layer system for showing some objects such as the streets, name of > way..., or informations about these, in the map. > But in the server side, how are they managed? What are the data > structures they use? > I don't have found any informations about this! > I hope you help me! > > Thanks! > > -- > You received this message because you are subscribed to the Google Groups > "Google Maps API" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/google-maps-api?hl=en. > > > > -- Barry - www.nearby.org.uk - www.geograph.org.uk -
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