how i can use database in unreal engine ?

Question

What is best method ?

Answer 1

This question isn't specific to Unreal Engine. If you're writing C++ code you can do anything that C++ can do - including databases.

If you're writing a game however, the target system most likely won't have a database running on it. Therefore I'd opt in maybe for something like SQLite, which can run entirely in memory or in a simple .db file in your game's resources.

Go ahead and google it up!