Both PostgreSQL and SQLite3 can be used with Django, and the choice between the two depends on the requirements of your project.

SQLite is a good choice if your project is small and simple, and doesn't require a lot of concurrent access. SQLite is easy to set up, doesn't require any configuration, and is included with the Python Standard Library.

On the other hand, PostgreSQL is a more powerful and scalable database, and is a better choice for more complex projects that require features such as transactions, advanced data types, or complex queries. It also has better performance when handling large amounts of data, and can handle many concurrent users.

In general, if you're building a small project that you don't expect to grow significantly over time, SQLite is a good choice. If you're building something more complex, or if you expect your project to grow and need a more powerful database to handle the increased load, PostgreSQL is a better choice.

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