Newbie Question: Replication from a local client to a central DB

Hi,

I want to create a solution which connects to a central server when available (i.e network connection available) but uses a local replica when not available.

When the connection is available any changes made will be sync'd to both local and central DB's.

I don't think that the LocalDB install of SQL Express will allow this.

So, do I need to install SQL Express on both the server and the local clients for it to work correctly?

What other options do I have?

(I've spent a couple of hours reading various posts/articles and cannot find the answer of which versions I need).

Thanks,

C.