This operation makes the diffenrence and the intersection between the objects of two vector layers.
The new layer geometries is the result of the spatial DIFFERENCE and the INTERSECTION of all objects from an input layer with another layer objects
The new layer attributes are composed at least by an ID, and a GEOMETRY. Besides that, the input layer attributes and the intersection layer attributes can be chosen to compose the new layer.
It is accessed through:
Processing > Vector Processing > Identity...
The Identity result can be stored in different TerraLib data sources. Check data source selector for more details on how to select a data source.