hyperdata, fkeys, validation
i'm finally understanding that the true 'web of data' or 'hyperdata' means that the notion of foreign keys is useless. you can't set up a dependency on some distant list or record!
i also now see that hyperdata means object validation is worthless. if you can use links to compose a record, these links can't be validated. if you want to enrich the hyperdata with your own (new) property, that won't appear in any object definition, either.
i'm starting t understand the challenges. and the value of semweb thinking. but i have a long way to go before i can actually *think* in semweb!