SQL Server database replication feature enables copying and distribution of data between different nodes, which provide the functionality for maintaining replicated data.
Active Roles uses the replication functionality of Microsoft SQL Server to copy and distribute configuration data from one Administration Service database to another, and to synchronize data among the databases for consistency.
|NOTE: SQL Server Books Online should be the primary resource you use for SQL Server replication questions. All contents relevant to Microsoft SQL Server replication is indexed under the “SQL Server Replication” topic in SQL Server Books Online at http://technet.microsoft.com/library/ms151198.aspx.|
This section explains the basic terms and concepts used in replication.
To replicate its configuration data, Active Roles employs the replication capabilities of Microsoft SQL Server. In SQL Server, the term replication refers to a process that copies and distributes data and database objects from one database to another and then synchronizes information between databases for consistency.
The Publisher is a database server that makes data available for replication to other database servers. The Publisher can have one or more publications, each representing a logically related set of data. In the Active Roles replication model, the Publisher has only one publication.
Subscribers are database servers that receive replicated data. Depending on the type of replication, the Subscriber can propagate data changes back to the Publisher or republish the data to other Subscribers. In the Active Roles replication model, a Subscriber can propagate data changes to the Publisher and receive replicated data from the Publisher.
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