Multiple Publications for Merge Replication? I am designing a system which will have one SQL server 2012 central database.

Each client will user merge replication to take an offline copy of their data to edit on the road.

If I add a publication I can add filters to that publication. The thing I can't work out though is that is only one set of filters.

For each client I have they will have a different set of filters to filter data that relates to them only. This is quite important from a security point of view.

How is this achieved with only one publication?
This is done in Merge Replication by using Parameterized Row Filters.  They allow for different partitions of data to go to different Subscribers without requiring multiple publications.