- OOP models assume that the "object pointer" (or object "handle") is a global unique identifier (GUID) for the "thing" represented by that object instance of that class.
- E/R models assume that there is either an opaque key (ala sequence numbers) or some set of attributes whose combined values form a GUID for the "thing" represented by that row of that table.
- S/N models assume that there is some explicit or internal key associated with each "entity".
Wednesday, June 7, 2006
When trying to map Object Oriented Programming models, to Entity Relationship models, to Semantic Network models, how does the philosophical concept of "identity" get handled? I.E. how is a "thing" identified in each model? [And the following assumes that incorrect criteria is not used e.g. using the "name" of the thing as its "identifier".]