Andrej - the database doesn't apply to logos - they are set by the Flight ID. The database does affect the silhouette - that is set by the short aircraft type in the database (for example B738, A346, E170).
If the LOT E170's don't show a proper Flight ID like LOT365, the logo won't appear, and if they haven't got the correct E170 code in the database, the silhouette won't appear.
Hope that helps.
Rod