spatial index file

Hello,

What actually does a spatial index file. I mean, I use shape files
right now but haven't generated ssx files (yet) But everything
seems to run as it should.So, does it add extra things or does it
speed up the application?

Martijn

Martijn van der Pauw, internetontwikkelaar.
Meteo Consult
martijn@weer.nl
tel: 0317 - 399800
fax: 0317 - 423164
http://www.weer.nl

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