I am using AS 7.0.2 in managed mode and I have requirement to connect to two different databases by the two servers clubbed in a single server group. The two servers present the same functionality and are associated to the same server group. However, the two servers would connect to two different databases. Since the datasource is defined at the profile level (datasource subsystem), is there anyway I could create a datasource placeholder definition (i.e. create an empty datasource tag) in my domain-preview.xml file and then give the implementation details of the datasource in my host.xml file (possibly under each server definition). Is this possible? Can this be done similar to how Interfaces are defined ?