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Can you connect to multiple database in a web application?
If you can work with single database, working with multiple is no different. You will need a connection string for each database.
How do I query across multiple databases?
How to Run a SQL Query Across Multiple Databases with One Query. In SQL Server management studio, using, View, Registered Servers (Ctrl+Alt+G) set up the servers that you want to execute the same query across all servers for, right click the group, select new query.
How would you manage connections to multiple databases in a single application?
Solution 1
- Add connection string for centralized db in web.
- Store user specific connection string in user login details table in another column or in another table.
- During user log in get user data with specific connection string & store it in session.
How do you connect multiple databases?
There are two methods to connect multiple MySQL databases into a single webpage which are:
- Using MySQLi (Improved version of MySQL)
- Using PDO (PHP Data Objects)
How can I connect two database in SQL?
To create a linked server to another instance of SQL Server Using SQL Server Management Studio. In SQL Server Management Studio, open Object Explorer, expand Server Objects, right-click Linked Servers, and then click New Linked Server.
How does CI connect to multiple databases?
Connecting to Multiple Databases If you need to connect to more than one database simultaneously you can do so as follows: $DB1 = $this->load->database(‘group_one’, TRUE); $DB2 = $this->load->database(‘group_two’, TRUE);
How to connect to two databases at the same time?
You can send a query to two databases at the same time. First, give a grant to DB1 to select from DB2 by GRANT select ON DB2.* TO DB1@localhost;. Then, FLUSH PRIVILEGES;. Finally, you are able to do ‘multiple-database query’ like SELECT DB1.TABLE1.id, DB2.TABLE1.username FROM DB1,DB2 etc.
How to query across multiple databases in one server?
We have a database server with multiple databases on it (all have the same schema, different data). We are looking for a way to query across all the databases (and for it to be easy to configure, as more databases may be added at any time).
How to host one application with multiple databases?
I have a requirement like, developed an ASP.net web application. I want to host this application for different companies with seperate database, but website shall be hosted only one copy in IIS. so, based on user login, the application should connect different database server.
Why do we need to query across all databases?
We are looking for a way to query across all the databases (and for it to be easy to configure, as more databases may be added at any time). This data access must be realtime. Say, as an example, you have an application that inserts orders – each application has its own DB etc.