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Why would you use a linked server?

Contents
  1. When would you use a linked server?
  2. Why you shouldn't use linked servers?
  3. How can use linked server in SQL Server query?
  4. How does linked server select data?
Linked servers enable you to implement distributed databases that can fetch and update data in other databases. They are a good solution in the scenarios where you need to implement database sharding without need to create a custom application code or directly load from remote data sources. 15 нояб. 2021 г.


When would you use a linked server?

A linked server is used to connect to another (remote) database or file (Xls, CVX) using SQL Server Management Studio (SSMS) and discover the data or objects. You can write SQL queries from your SSMS directly on a database on another machine. In Oracle they call it DBLinks (Database Links).

Why you shouldn't use linked servers?

Problem #2: linked servers don't cache data. Even worse, it penalizes both servers involved with the linked server query. It's hard on the local server, and it's hard on the remote server that holds the single source of truth for the table.

How can use linked server in SQL Server query?

Right-click on the Linked Server node and choose New Linked Server. In the General tab of the New Linked Server window, choose a name for your linked server, then choose the type of the server you need to connect to using that linked server.

How does linked server select data?

1 Open SQL Server Management Studio, navigate to the Object Explorer pane, and select Server Objects > Linked servers > Providers. 2 Right-click mrOledb. Provider and select Properties. 3 Select allow in process, and then click OK.

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