What are the replication types available in SQL Server 2008 onwards?
There are four MS SQL Server replication types: snapshot replication, transactional replication, peer-to-peer replication and merge replication.
- Snapshot replication.
- Transactional replication.
- Peer-to-peer replication.
- Merge replication.
- Configuring users for MS SQL Server.
- Importing a database from a backup.
What is the difference between transactional replication and merge replication?
Merge Replication is the same as SQL Server Transactional replication; however, Merge replication replicates data from the Publisher to Subscriber and vice-a-versa. Merge replication uses the Snapshot Agent and the Merge Agent.
How do you set up transactional replication?
Configure the publisher for transactional replication
- Connect to the publisher in SQL Server Management Studio, and then expand the server node.
- Right-click SQL Server Agent and select Start.
- Expand the Replication folder, right-click the Local Publications folder, and select New Publication.
What is a transactional replication?
Transactional replication is a feature of Azure SQL Managed Instance and SQL Server that enables you to replicate data from a table in Azure SQL Managed Instance or a SQL Server instance to tables placed on remote databases. This feature allows you to synchronize multiple tables in different databases.
What is transactional snapshot?
A transaction snapshot gives you a cross-tier view of the processing flow for a single invocation of a transaction. Call drill downs, where available, detail key information including slowest methods, errors, and remote service calls for the transaction execution on a tier.
What is transactional replication?
What are replication types?
Types of Replication:
- Snapshot replication sends the entire data set to the subscriber.
- Transactional replication only sends modifications to the data.
- Merge replication items are modified at both the publisher and subscribers.
- Heterogeneous replication allows access to other database products.
Is transactional replication bidirectional?
Bidirectional transactional replication is a specific transactional replication topology that allows two servers to exchange changes with each other: each server publishes data and then subscribes to a publication with the same data from the other server.
Why is primary key needed in transactional replication?
The reason is in the subscriber, rows are updated/deleted one-by-one using primary key. For example: If you delete 100 rows in the publisher using a single DELETE statement, in the subscriber 100 DELETE statements would be executed.
What is the difference between replication and mirroring in SQL Server?
Mirroring refers to keeping copies of database to a geographically different location. Replication referes to creating multiple copies of data objects of a database for distribution efficiency. Replication is done to create a copy of database objects and can be copied to a different database as well.
Is transactional replication synchronous?
1 Answer. SQL Server supports Transactional, Snapshot and Merge replication. They are inherently asynchronous. Mirroring on the other hand does support synchronous/asynchronous commit however you can only mirror one database to one other location.
What is SQL server replication and how it works?
SQL Server replication is a technology for copying and distributing data and database objects from one database to another and then synchronizing between databases to maintain consistency and integrity of the data. In most cases, replication is a process of reproducing the data at the desired targets.
What are different types of replication in SQL Server?
SQL Server 2000 supports three distinct types of replication: snapshot, transactional, and merge, each of which has its own purpose.
How merge replication works in SQL Server?
You can initiate near to real-time updates with Merge Replication by following these steps: First you need to initiate the SQL Server and select “replication” under the Configure Distribute options. Once configured, you need to specify the server and then select the folder, database files and publisher server as required for generating a script for the distribution Select a New Publication and specify the database you want. Select “Merge Replication” and set the snapshot to start the process.
What is a transaction in SQL Server?
Transactions in SQL are units or sequences of labor accomplished in a very logical order. A transaction is that the propagation of one or additional changes to the database. As an SQL Transaction example, if you’re making a record or updating a record or deleting a record from the table, then you’re performing a dealing on that table.