I know this reply may be a bit late but I must write it down for future documentation if anyone would look it up.
When it comes to develop apps in Base as you were doing in MS-Access, I think you would find Gambas to be a better solution. Gambas is an open source alternative for Visual Basic (please visit this link). I know that they have improved their IDE since version 3.x and it is on stable release.
Gambas has great & simple connectivity to MySQL (My favorite) and to PostgreSQL. Plus, it has multi socket capability and much more.
In the long run, if you have any experience with VB at all, and you are willing to invest several hours to get to now the new VB IDE and coding rules (which are not much different from MS), I would strongly suggest trying Gambas.