How does a linked server work?
- When would you use a linked server?
- Why you shouldn't use linked servers?
- What's a link server?
- How does linked server select data?
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.
What's a link server?
Linked Servers are a method by which a SQL Server can talk to another ODBC compliant database, such as another SQL Server instance or an Oracle database, with a direct T-SQL query. There are several important settings to know when setting up a 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.
Related Questions
-
Anonymous2 weeks ago
Expert answer2 weeks ago -
Anonymous2 weeks ago
Expert answer2 weeks ago -
Anonymous2 weeks ago
Expert answer2 weeks ago -
Anonymous2 weeks ago
Expert answer2 weeks ago -
Anonymous2 weeks ago
Expert answer2 weeks ago -
Anonymous2 weeks ago
Expert answer2 weeks ago -
Anonymous2 weeks ago
Expert answer2 weeks ago