Open Municipal Geodata Standard
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The OMG Standard seeks to promote the free flow of information between government agencies and citizens by establishing a common set of technical standards for organizing and sharing public data.

Technical Specification

A very high level start to an XOMGL (eXtensible Open Municipal Geodata Language - XML) technical specification to get the ball rolling. Can also be output in JSON and CSV formats.

Why Not Use...?

So why not just use an existing standard format? Well, as far as we know, there is not a format that is made for this purpose. For example, you could use KML or GeoRSS, but most government data does not have Latitude and Longitude, which is an essential part of those formats. KML is more suited to the final output of the data, with styles included, not really for data transfer and export from city databases.

Wikipedia

XOMGL Wikipedia Article

Empty XOMGL

All possible fields with comments
View XML

Minimum XOMGL

Minimum required fields with comments
View XML

Example: Crimes

An example of a crime dataset
View XML

Example: Pollution Sources

An example of a pollution source dataset
View XML