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- #Sql server replication how to
- #Sql server replication software
- #Sql server replication trial
- #Sql server replication windows
The Agent runs on the side of the Subscriber.Ī subscription database is a target database in the MS SQL replication model. Pull subscription: the changed data made on the Publisher is requested by a Subscriber. No request from the Subscriber is needed. Push subscription: changed data is forcibly transmitted from a Distributor to the Subscriber database. There are two types of subscription - push and pull. The subscription is used to define the publication data that must be received, and where and when this data will be received. Subscription is a request for a copy of a publication that must be delivered to the Subscriber. There are five types of agents: Snapshot Agent, Log Reader Agent, Distribution Agent, Merge Agent and Queue Reader Agent.
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A multi-subscriber model is used when multiple subscribers are connected to a single publication.Īgents are MS SQL Server components that can act as background services for relational database management system and are used to schedule automated execution of jobs, such as MS SQL database backup and replication. A single-subscriber model is used when there is one Subscriber. One Subscriber can receive data from more than one publisher and publication. The Publisher can have more than one publication.Ī subscriber is a database that receives the replicated data from a publication. In this model, the Publisher and the Distributor run on different servers.Ī publisher is the main database copy on which publication is configured, making data available to other MS SQL servers that are configured to be used in the replication process. A remote distributor model can be used when you want subscribers to be configured to use a single MS SQL Server instance to get different publications (centralized distribution). In the local distributor model, a single MS SQL Server instance runs both the Publisher and the Distributor. A distributor database can be considered as the Publisher and the Distributor at once. A distributor acts as a database for storing replicated transactions. There are three main roles in MS SQL database replication: distributor, publisher and subscriber.Ī distributor is an MS SQL database instance configured for collecting transactions from publications and for distributing them to subscribers. For example, you can select only the most critical tables and fields by using filters and replicate only this data.
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MS SQL Server replication allows you to use filters and select custom entities for replication, which, as a result, reduces traffic, redundancy and amount of data stored in a database replica. This is the final set of entities from the database designated for replication.Ī filter is a set of conditions for an article. Multiple articles can be created for the same object.Ī publication is a logical collection of articles. Articles can be scaled vertically or horizontally by using filters. Terminology Used for MS SQL Server Replicationīefore diving into configuration and setting up MS SQL Server replication, let’s first briefly go over the main terms and the replication models.Īrticles are the basic units to be replicated, such as tables, procedures, functions and views.
#Sql server replication trial
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#Sql server replication how to
This blog post lists SQL Server replication types, explains how replication in SQL Server works, and describes how to perform SQL Server replication. With MS SQL Server replication, it is possible to create an identical copy of your primary database or synchronize changes between multiple databases, and maintain data consistency and integrity. Availability of databases and data relevance are critical for businesses, making backup and replication of databases a necessity.
#Sql server replication software
Databases are important for all types of companies and many software solutions use databases that can be centralized and distributed.
#Sql server replication windows
Microsoft SQL Server (MS SQL Server) is a database management software that can be installed on Windows Server operating systems. By Michael Bose How to Configure MS SQL Server Replication: Complete Walkthrough