With A6, you are left with what I said before about entities and strings. As well, there you have a very robust MySQL plugin thus I would mess with that if you want more support from people here (I've never heard of anyone using MS access for MP).

And BTW, since any MP effort is a months long, if not years long, project, it is not wise to learn on the un-supported A6. Best switch up to A7 where you can still do A6-like networking, but at least get support from Conitec and us as well as easy access to lite-c.