[Typo3] Can i map only a part of a Data Structure ?

[Francesco di Francia]

Hi at all.

I need to create a "global" DS and from this i then create/map 2 
different homepage template object that share only some field of this DS.
Just for example, they share only the fields: header,navbar,footer.
The main body instead is different and for TO1 i have 
col470,col300,col160 and for TO2 i can have col600,col300.
So at the end of the story i have:
TO1: header, navbar, footer,col 470,col300,col160
TO2: header, navbar, footer,col600,col300.

To achieve this result i thought to create a global DS made by this 
fields: header, navbar, footer,col 470,col300,col160,col600,col300.

Or there's another way ? For example create a new DS using the same 
fiel_name for the shared field ? ( header, footer, navbar ) ?

Thanks for clarification,

Francesco