The access runtime is not different then the full version, except that you
can't modify forms etc.
In some versions of the runtime, it was a 150 meg install, and required a
re-boot.
This is not exactly the kind of software that would install and run on a
pda.
So, no...there is not a ms-access that runs on a pda. There are a number of
good database products for pc's..and quite a few options for syncing with
ms-access.
Here is some links to get you started...
Pocket PC Access Database Alternatives
http://www.oreillynet.com/pub/wlg/3358
The "Missing" Pocket PC apps: Access & PowerPoint
http://www.oreillynet.com/pub/wlg/3300