I need a pair of adjectives (or adjectival phrase) to distinguish between two types of data associated with a thing. On the one hand are attributes that occur only once, and can be defined as a 1:1 relationship between a label and its content; on the other are sets of attributes that can recur, and are really lists of things, each entry of which has its own set of attributes.
That’s not at all clear, so to make it concrete, consider a car. There are certain attributes that exist only once: its vehicle identification number, its year, its manufacturer (e.g. “Toyota”), its model designation (“Corolla”). That’s the first category.
On the other hand, the car’s maintenance record is a list of events. For example, if the car was taken in for an oil change (maintenance activity) on January 2, 2015 (date) at Mac’s garage (servicer); and taken in for a headlight replacement (maintenance activity) on March 8, 2015 (date) at Cars-R-Us (servicer). You have two maintenance events. That’s an example of the second category, where there can be more than one.
There can be multiple things in the second category, too. I’ve already given an example of maintenance events, but another might be ownership. It could have, say, 4 or 5 owners during its lifetime.
So I’m looking for a good adjective to distinguish between those one-of-a-kind attributes; and those attributes that can occur multiple times.