How does transactional replication support updates at subscribers?

How does transactional replication support updates at subscribers?

Transactional replication supports updates at Subscribers through updatable subscriptions and peer-to-peer replication. The following are the two types of updatable subscriptions: Immediate updating.

How to create updatable subscriptions for transactional publications?

To create updatable subscriptions for transactional publications, see Create an Updatable Subscription to a Transactional Publication (Management Studio) When using updatable subscriptions you can specify that a subscription should use one update mode and then switch to the other if the application requires it.

What to take into account when replicating identity columns?

There are two types of ranges to take into account when replicating identity columns: the ranges assigned to the Publisher and Subscribers, and the range of the data type in the column. The following table shows the ranges available for the data types typically used in identity columns.

How are identity ranges managed in Merge Replication?

Merge Replication Identity ranges are managed by the Publisher and propagated to Subscribers by the Merge Agent (in a republishing hierarchy, ranges are managed by the root Publisher and the republishers). The identity values are assigned from a pool at the Publisher.

Do you have to be read only in transactional replication?

By default, Subscribers to transactional publications should be treated as read-only, because changes are not propagated back to the Publisher. However, transactional replication does offer options that allow updates at the Subscriber.

Is the snapshot agent used in transactional replication?

The procedures by which the Snapshot Agent implements the initial snapshot in transactional replication are the same procedures used in snapshot replication (except as outlined above with regard to concurrent snapshot processing).

How to add rowguid to every table in Merge Replication?

To accomplish this: Merge replication adds the column rowguid to every table, unless the table already has a column of data type uniqueidentifier with the ROWGUIDCOL property set (in which case this column is used).

How does transactional replication in SQL Server reinitialize?

As we all know, by default, subscriptions in a SQL Server transactional replication publication are reinitialized with a snapshot, which is generated by the Snapshot Agent and applied by the Distribution Agent.

When was updatable subscriptions removed from SQL Server?

Updatable Subscriptions – For Transactional Replication. This feature remains supported in versions of SQL Server from 2012 through 2016. This feature is in maintenance mode and may be removed in a future version of Microsoft SQL Server.