Hi everyone!:)

Having some experience in modeling, though limited in color modeling I have a
question which seems typical for me:

(At least for me) it seems that everything is changing and bound to time:
things, parties and descriptions, too. And in many cases (office-like, auditing,
etc.) systems has to preserve the older record versions and many of them needs
to store time data. How does this effect colour modeling?

For instance take the Student Registration domain:

From one viewpoint the Adress is a thing, from another it's a moment-interval
(for instance the street can be renamed resulting in different address versions
for the same place). How should one model this situation? What will be the
archetype of an address version?

From one viewpoint the Student is a role, from another it's a moment-interval
("being a student" has a start and end date). How should one model this
situation? Should we split the student entity into a role- and a moment-interval
entity, introducing unnecessary complexity? Or should we merge them introducing
an entity having two different archetypes.

Any idea? Anyone who met similar situations?

Cheers,
Gyula