http://dcx.sap.com/index.html#sqla170/en/html/8156b9926ce21014a6ad9437b2635963.html
http://dcx.sap.com/index.html#sqla170/en/html/81b918596ce210148751d17f613010b8.html
http://dcx.sap.com/index.html#sqla170/en/html/81bb8f316ce210149a518a8e155ff37d.html
Douglas,
The Mobilink client/remote database can be either SAP SQL Anywhere or UltraLite.
Remote clients synchronize with a single consolidated database.
However, hierarchical database configurations are possible.
You can have a look at the link above for more details.