2. A method according to claim 1 , wherein the entity-reference declarative program code specifies the entity references by defining one or more relational views over the relational tables using an arbitrary view definition language.
2. A method according to claim 1 , wherein the entity-reference declarative program code specifies the entity references by defining one or more relational views over the relational tables using an arbitrary view definition language. 3. A method according to claim 2 , wherein each relational view identifies one class of entity references that need to be deduplicated and wherein there can be more than one class of entities.