emantic mappings Mediated Schema CD: ASIN, Title, Genre Artist: ASIN, name, Informatio n sources Mapping logic Books Author Album Title ISBN ASIN ISBN FirstName Pri LastName DiscountPrice DiscountPrice Studio Edition Artists CDCategories Book Categories ASIN ASIN ISBN ArtistName Category Category Group NameSemantic Mappings Books Title ISBN Price DiscountPrice Edition CDs Album ASIN Price DiscountPrice Studio BookCategories ISBN Category CDCategories ASIN Category Artists ASIN ArtistName GroupName Authors ISBN FirstName LastName CD: ASIN, Title, Genre,… Artist: ASIN, name, … Mediated Schema Mapping logic Informatio n sources