> A time-varying relation is just what it says: a relation that changes over time ... Critically, the full suite of existing SQL operators remain valid on time-varying relations
Any relation by definition is supposed to change in time. So why do we need to introduce a special kind of relations? The authors essentially confirm that there is no difference between classical relations and "time-varying" relations.
Also, it is not clear how does it relate to EPL (in CEP) which is also based on SQL.
Any relation by definition is supposed to change in time. So why do we need to introduce a special kind of relations? The authors essentially confirm that there is no difference between classical relations and "time-varying" relations.
Also, it is not clear how does it relate to EPL (in CEP) which is also based on SQL.