How do multiple databases work?

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.

How do you integrate multiple databases?

Merge Multiple Databases into a Single Database1Create several smaller databases containing the core data tables.2Merge the smaller databases into a single larger database.3Build the schema/add the relevant constraints.Merge Multiple Databases into a Single Database - Stack Overflow

Why should you use multiple databases?

Good reasons to create separate databases would be to support different availability requirements or simplify administration. For example if your databases require very different backup schedules or different recovery models. Another reason would be if you may want to run them on different instances.

What is a multiple database?

A multi-model database is a database that can store, index and query data in more than one model. For some time, databases have primarily supported only one model, such as: relational database, document-oriented database, graph database or triplestore. A database that combines many of these is multi-model.