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What is replication in a database?
Replication is the process of copying data from a central database to one or more databases. The central database is called the publication database because it provides the data for users at other sites. The data in the publication database is copied (replicated) to subscription databases at other locations.
What are the advantages and disadvantages of replication?
ADVANTAGES OF DATA REPLICATION – Data Replication is generally performed to:
- To provide a consistent copy of data across all the database nodes.
- To increase the availability of data.
- The reliability of data is increased through data replication.
- Data Replication supports multiple users and gives high performance.
Is database replication real time?
Understanding Real Time Data Replication Most databases provide robust inherent support replicating data in real-time, thereby allowing users to generate numerous copies of complex datasets and storing them across various locations of the same kind of database to facilitate seamless access.
What is real time data replication?
Real time replication is the instantaneous copying of data to one or more places as it is being generated. In practice, there is always some amount of time that elapses between the moment data is generated, and the moment it is copied. So technically, real-time replication is a relative term.
How does replication work in a distributed database?
Database replication is the frequent electronic copying of data from a database in one computer or server to a database in another — so that all users share the same level of information. The result is a distributed database in which users can quickly access data relevant to their tasks without interfering with the work of others.
What are the different types of replication in SQL Server?
MS SQL Server Replication Types. 1 Snapshot replication. Snapshot replication is used to replicate data precisely as it appears at the moment when the database snapshot was created. 2 Transactional replication. 3 Peer-to-peer replication. 4 Merge replication.
How does merge replication work in SQL Server?
When the network connection is established between both database servers, merge replication agents detect changes made on both databases and modify databases to synchronize and update their state. Merge replication is similar to transactional replication, but data is replicated from the Publisher to the Subscriber and inversely.
Is it possible to replication MS SQL Server 2008?
Replication will not work if you install MS SQL Server 2008 on the second machine. For example, if you want to configure MS SQL transactional replication, you can use the second database server (where the Subscriber is configured) of a version within two versions of the source database server on which the Publisher is configured.