Diagram 3. Basic data mapping model At the source database, each type of victim is recorded separately according to the type of act suffered (torture, arbitrary detention and enforced disappearance). The target database, on the other hand, is designed to record all the victims in the same bucket. In this case the matching is very simple, as the different victim typologies share the same fields. After matching fields, we just need to add the field type of act suffered (to select between torture, arbitrary detention and enforced disappearance) and we will have the same information in the source and the target database. 9