SQL Remote User's Guide
SQL Remote Design for Adaptive Server Enterprise
There are cases where a row may need to be included in several subscriptions. For example, if instead of the many-to-one relationship between customers and sales representatives that we had above, we may have a many-to-many relationship.
The Policy example
Maintaining the subscription-list column
Tuning extraction performance for shared rows
Using the Subscribe_by_remote option with many-to-many relationships