Data Base Replication

Hi Arun,

Replication is the process of copying/moving data between databases on the same or different servers.

There are three types of replication supported by SQL SERVER:-

Snapshot Replication

Snapshot Replication takes snapshot of one database and moves it to the other database.After initial load data can be refreshed periodically.The only disadvantage of this type of replication is that all data has to copied each time the table is refreshed.

Transactional Replication

In transactional replication data is copied first time asin snapshot replication , but later only the transactions are synchronized rather than replicating the whole database.You can either specify to run continuously or on periodic basis.

Merge Replication

Merge replication combines data from multiple sources into a single central database.Again as usual the initial load is like snapshot but later it allows change of data both on subscriberand publisher , later when they come on-line it detects and combines them and updates accordingly

Please refer the below links

http://docs.oracle.com/cd/A58617_01/server.804/a58227/ch_repli.htm

http://www.csee.umbc.edu/portal/help/oracle8/server.815/a67781/c31repli.htm

Thanks

1 Reply

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Satyapriya Nayak14y ago
Hi Arun,

Replication is the process of copying/moving data between databases on the same or different servers.

There are three types of replication supported by SQL SERVER:-

Snapshot Replication

Snapshot Replication takes snapshot of one database and moves it to the other database.After initial load data can be refreshed periodically.The only disadvantage of this type of replication is that all data has to copied each time the table is refreshed.

Transactional Replication

In transactional replication data is copied first time asin snapshot replication , but later only the transactions are synchronized rather than replicating the whole database.You can either specify to run continuously or on periodic basis.

Merge Replication

Merge replication combines data from multiple sources into a single central database.Again as usual the initial load is like snapshot but later it allows change of data both on subscriberand publisher , later when they come on-line it detects and combines them and updates accordingly

Please refer the below links

http://docs.oracle.com/cd/A58617_01/server.804/a58227/ch_repli.htm

http://www.csee.umbc.edu/portal/help/oracle8/server.815/a67781/c31repli.htm

Thanks
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