How and where are openstreetmap data stored?

This could look like quite a basic question but I can't find a clear answer on the Internet... I was simply wondering what DBMS was used to store OSM data. By entering such a question on Google, you get so many informations on how to extract data and import them into various DBMS, but no basic information (just for curious guys) about the way data are stored. I recently read about NoSQL that was based on Key-Value pairs, which reminded me the way OSM data are tagged. Is OSM on NoSQL? Or PostgreSQL? Or any other DBMS? Many thanks for your answers.

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asked 24 Sep '15, 19:55

wiltomap
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accept rate: 0%

edited 24 Sep '15, 20:04

aseerel4c26 ♦
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2 Answers:

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OSM started out on MySQL but has changed to PostgreSQL (not PostGIS) in 2009 and that's what we still use.

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answered 24 Sep '15, 20:01

Frederik Ramm ♦
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edited 24 Sep '15, 20:10

Note that PostGIS is often used in derived databases, like rendering and geocoding.

(25 Sep '15, 11:24) Vincent de P... ♦

See https://wiki.openstreetmap.org/wiki/Database and see https://wiki.openstreetmap.org/wiki/Develop "for curious guys". :-)

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answered 24 Sep '15, 20:07

aseerel4c26 ♦
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accept rate: 18%

edited 24 Sep '15, 20:27

Many thanks to the both of you! I'm gonna have a closer look at it.

(24 Sep '15, 20:45) wiltomap

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question asked: 24 Sep '15, 19:55

question was seen: 6,752 times

last updated: 25 Sep '15, 11:24

How and where are openstreetmap data stored?

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