The Distributor is a server that hosts the distribution database and stores history data, transactions, and metadata. In the Active Roles replication model, the same server is used as both the Publisher and Distributor.
In the Active Roles replication model, the Publisher and its Subscribers are collectively referred to as replication group, with each server in the replication group being referred to as replication partner.
Replication group is comprised of replication partners that include a single Publisher and may include any number of Subscribers. When data in a replication partner’s database changes, replication ensures that the data changes are propagated to the databases maintained by all the other replication partners.
Articles are tables of data, partitions of data, or database objects that are specified for replication. Each publication is a collection of articles from one database. This grouping of multiple articles makes it easier to specify a logically related set of data that is to be replicated together. In the Active Roles replication model, each article is a table of data.
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