OSD via MDT + SCCM 2007 and all child primary sites

Hi

I have a querry on OSD part using MDT 2010 and and SCCM 2007 R3

In my scenario there ther is parent primary and 5 child primary.

1- can a MDt server be linked to child primary site and we can perform OSD from Parent Primary site.

2- Can a single MDT server be linked to Multiple Child Primary sites.

if yes the can all child primary sites use single deployment share\deployment database.

Regards Sushain KApoor