How many databases can one application contain?

Can an application have two databases?

Multiple database technologies can be used with monolithic applications, and can even seem more natural in a microservices environment, where each service would have its own database. This approach, however, is not bulletproof. Far from it, actually.

How can we use two databases to a single application?

so, based on user login, the application should connect different database server. For Ex: if user "xxx" login with credential and belogs to "ABC" company and the database is "ABC", then ABC data need to display on the web page.

Can you have multiple databases?

Try to avoid multiple databases or tables with the same design or purpose. Multiple database apps are usually apps which have their own data requirements but also have to integrate with another existing app or service's database.

Can we have two databases configured for the same application?

There are two different databases created to configure multiple databases in a single spring boot application. The first database will contain employee table. The table contains three columns id, name and salary. The second database contains manager table.