On a less flippant note, Chris Date (among others) has argued that database systems should explicitly prohibit anything which is not allowed. That increases work in the short term, but decreases the possibility of putting rubbish into the database.

Of course, it's quite hard to devise something which would prevent nonsense like "IVAN YEARS" getting into a "description field". Unless you can parse the field for meaning (and some legitimate album and book titles are not standard English) the I'm not sure how you can do it.