File extension .DB - What kind of database is it exactly?

Question

I have a database file with .DB file extension. I have been googling and it looks like SQLite. I tried to connect to it using SQLite and SQLite3 drivers and I am getting an erro

Answer 1

There's no conclusive way to know, because SQLite encrypts the entire database file, including the header.

Further, there's not a lot of difference to you, except for possible error text to a user if you're prompting them for a password.