Database backend for Office files?

[Matt P.]

Hi,

Please tell me I wasn't dreaming when I read about the
new Office system and how it could be set up to use a
database as the shared store for Office data, presumably
when you move to XML format. The point of this was that
you could open a portion of a document for editing and
the system could track what part of it had changed and
only save the changes. I can't find anything about this
on the MS site so I presume this was either dropped as a
feature or it is some sort of an API which requires heavy
customisation to work. Anyone heard of this?

Thanks,
Matt