GeoPackage
GeoPackage is an SQLite based standard format that is able to hold multiple vector and raster data layers in a single file.
GeoPackage files can be used both as Raster Data Stores as well as Vector Data Stores (so that both kinds of layers can published).
Adding a GeoPackage Vector Data Store
When the extension has been installed, GeoPackage will be an option in the Vector Data Sources list when creating a new data store.
 
GeoPackage in the list of vector data stores
 
Configuring a GeoPackage Vector data store
| Option | Description | 
| database | URI specifying geopackage file. | 
| user | User to access database. | 
| passwd | Password to access database. | 
| namespace | Namespace to be associated with the database. This field is altered by changing the workspace name. | 
| max connections | Maximum amount of open connections to the database. | 
| min connections | Minimum number of pooled connections. | 
| fetch size | Number of records read with each interaction with the database. | 
| Connection timeout | Time (in seconds) the connection pool will wait before timing out. | 
| validate connections | Checks the connection is alive before using it. | 
When finished, click Save.