I'm *sure* I've seen this discussed on here before - infact I'm worried it might even have been me who asked the question ! But I've searched the archives without luck, so here goes : Is there anything inherently "special" about the UUID type ? i.e. if I store a UUID in a text is it "worse" ? (I'm speaking here about performance & storage, obviously, not the fact that uuid enforces the formatting). Thanks ! Laura