[ghurtado]

> It's quite rare to see someone migrate from one database to another.

I'm not discounting the level of effort involved, but I think the reason you don't see this often is because it is rare that simply changing DBMS systems is beneficial in and of itself.

And even if it was frictionless (ie: if we had discovered ORM Samarkanda), the real choices are so limited that even if you did it regularly, you would soon run out of DBMSs to try.

[lll-o-lll]

It would obviously be beneficial to go from super expensive to free (Postgres). But no one does - why? Because sql is just a veneer over otherwise two completely different things.