The 'Maps to' relationship is a very convenient and important relationship that is always used during ETL. I was wondering though, is there some metadata on these mappings? e.g. the origin of the mapping and the correctness of the mapping (do the two concepts have the exact same meaning?).
The background for my question is this; besides mapping quantities mapped/unmapped, we would also like to capture mapping quality. Many mappings exist, but are not perfect. Even though 100% of the source concepts are mapped, it does not mean that it is a lossless translation. Therefore it would be interesting to output a statistic like '74% are mapped to an exact match', '20% are mapped to a higher hierarchy' and '6% are mapped to a lower hierarchy'.