Propagation methods

When a transaction modifies shared data at any one database, the transaction or changes must be replicated to the other databases in the synchronization system. There are various means by which this task may be accomplished.

Two-way synchronization

All SQL Anywhere synchronization technologies provide two-way synchronization. Changes made at the central database are propagated to remote databases. Changes made at remote databases are propagated to the central database, and to other remote databases. MobiLink allows upload-only, download-only, and two-way synchronization.

Both SQL Remote and MobiLink allow the same data to be changed simultaneously at multiple locations and both provide a means of resolving any conflicts.

Session-based synchronization: MobiLink
Message-based synchronization: SQL Remote

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