"Locking things in" is an issue. It might not be a too big issue but it is one definitely. Consider choosing Oracle as your database. It is a great database ma

"Locking things in" is an issue. It might not be a too big issue but it is one definitely. Consider choosing Oracle as your database. It is a great database maintained by a big company so it will be around in future too. But you will be locked-in to very expensive licensing because when big businesses are "locked in" Oracle can and will raise their prices.