On the Open Database dialog program asks me for the file and it reads the supported file types are ".db .db3 .sqlite .sqlite3". But for some reason when I try to open "key.db" file from profile ...

In rtabmap you can open the database (db) and then export from the File menu.

DB-GPT is a cutting-edge open-source project that merges the power of large language models (LLMs) like GPT with database functionalities.