gdal GMLAS using OGR layers and fields (requires gdal 2.2+)
to generate the SQL DDL and if possible to build a FeatureStore on the configuration files used by those external tools.
For image raster data deegree provides already a GdalTileStore using gdal as a datasource provider.
Currently deegree supports it's own XML mapping configuration file to map a GML application to an E/R model.
This feature request proposes that deegree supports also external tools such as:
For image raster data deegree provides already a GdalTileStore using gdal as a datasource provider.