Object-oriented data models and relational data models have partially incompatible characteristics. In particular, object-oriented models include the notion of identity while relational models do not and are based completely on the notion of value. Due to differences like this, it appears difficult for one benchmark to address all temporal data models.
Another important distinction among temporal data models is where time enters a model. For example, times are associated with tuples in some models and with attribute values in other models.
The scope of the current benchmark is only restricted explicitly in terms of types of queries and data allowed.