In return of the VAMDC query, the server returns the filtered database under the VADMC-XSAMS format (modified version of the XML Schema for Atoms, Molecules and Solids3). This is basically an XML file providing several tables. LINEDB is interested in the <Species><Molecules> table (which provides a collection of <Molecule> blocks) and the <Processes><Radiative> table (which provide a collection of <RadiativeTransition> blocks.