GeoPackage (.gpkg) is defined by the Open Geospatial Consortium (OGC) as an open, non-proprietary, platform-independent, standards-based data format for geographic information systems (GIS). It is designed to be a lightweight format that can contain large amounts of varied and complex data in a single, easy-to- distribute and ready-to-use file. GeoPackage is natively supported by numerous software applications.

GeoPackage offer users the following benefits:

• The single file is easy to transfer and offers the end-user a rich experience.

• Attribute names are not limited in length, making the format user friendly.

• The file size limit is large at 140 TB.

• It supports raster, vector and database formats, making it a highly versatile solution.

• It is an OGC standard.

• In most cases, it is a plug-in-and-play format.

For further information on GeoPackage, please see the GeoPackage website.

Attribute mapping

The naming of attributes between GeoPackage and GML is very similar as neither format limits the number of characters for an attribute name. The following tables map the GML attribute name to the GeoPackage attribute name.