Does an application need a database?

Can we have application without database?

Databases can be great and wonderful and exceptionally useful. It's just that it has become the default position, when in fact there are a lot of applications where a big, separate database isn't necessarily needed.

Does application use database?

The main purpose of database applications is to provide a way for data to be consumed either by end users (via UI) or other higher-level applications (via APIs). A database application can be used for storing or retrieving data, processing transactions, or various machine learning calculations.

Do desktop applications need database?

There are lots of ways to persist data in a desktop application. A database is one choice. You would probably have to provide an installer unless you're using a file based database such as SQLite. You might also just write to a file - either a text file, an XML file, serializing objects, etc.