Imposm creates about a dozen tables for the most important features. You can change that with a custom mapping.
Below is a list of all default tables. The names are the base names of the tables and the prefix osm_new_ will be added as a prefix.
Tables like above but with simplified geometries (tolerance 200m)
Tables like above but with simplified geometries (tolerance 50m)
You need to change the tolerance values if your projection does not use meters (e.g. EPSG:4326).
These views combine minorroads, mainroads, motorway and railways.
Each table contains at least four columns:
Most tables contain additional columns. For example, all road tables contain tunnle, bridge, z_order and ref columns.
For now you need to use the default mapping configuration as the documentation.