Do I need sharding or replication ? (no replies)

Hi,

I face the following challenge :
I got a numbers of distant site, every site own his database. I am interested in one single
table in every site.

I would like to consolidate this table (T) on a main site (headoffice) so I got all the record
of every distant site.

On site X, table T
(Id, VALUE)
X, data1
X, data2

on site Y, table T
(Id, VALUE)
Y, data1
Y, data2

and so forth,
So on the main site, I need a replication model that produce Table T (read only):
(Id, VALUE)
X, data1
X, data2
Y, data1
Y, data2
Z, dataz

no need to propagate changes on this table to others site.
Thanks for your advices, or pointers.
D