That article only lists MS and Oracle though. Apart from IBM, I don't think CockroachDB Enterprise has such a prohibition, nor does Google Spanner (I think?), nor does Amazon Aurora (again I think?). And of course all the open source competitors don't have this clause.
Basically my impression is that DeWitt clauses are common enough to be well-known, but still in the distinct minority. That's just an impression though.
Basically my impression is that DeWitt clauses are common enough to be well-known, but still in the distinct minority. That's just an impression though.