A quick glance about key Replication Server concepts.
Replication Server maintains copies of tables in different databases on a network. The replicated copies provide two advantages to users at the sites: faster response and greater availability.
A replication system built on Replication Server uses ExpressConnect or ECDA gateways to connect to heterogeneous replicate data servers like HANA, Oracle, and Microsoft SQL Server.
Replication Server is designed with an open interface that allows non-Sybase data servers to be included in a replication system.
One copy of a table is the primary version. All others are replicated copies.
Using subscriptions, a replicated copy of a table may contain a subset of the rows in a table.
Replication Server security consists of login names, passwords, and permissions. Replication Server also supports third-party network-based security mechanisms and secured communication channels.
Replication Server uses optimistic concurrency control that processes failures when they occur. Compared to other methods, optimistic concurrency control provides greater data availability, uses fewer resources, and works well with heterogeneous data servers.