what db settlement collecting configurable demographic data?

i'm operative an concentration free tyro organization. concentration lane coming fund-raising (primarily) tyro participants an event. things we'd collect demographic information students register eventuality the craving office evaluating offering make reports administration tyro coming year, major, college, etc. goals digest marketplace concentration identical organizations during universities. i'm conceptualizing app plugin settlement authentication office opening some-more general.

so distant i've adult integrate opposite ways store demographic information database. i assume many universities collect (and have sources information for) identical demographic information. box i keep suitable tools demographic information (those things change yearly) columns registrations list rest participants list (those things consistent an individual). alternatively, i've deliberate retaining demographics list binds registration id, attribute, value triple any registration preferred attribute. i cruise initial choice many easier query opposing reports, since second choice many some-more flexible.

i'm wondering there alternatives i haven't considered. or, you've faced identical problem hoop (and positive result)?