Hi Advait C,
Essentially, if you’ve got WordPress up and running and it is already “talking” to your database (if it isn’t you’ll know – because WordPress simply won’t work without a valid database connection), then you need do nothing more.
The Events Calendar and all of our premium plugins talk to the database through WordPress itself, so no further database configuration is necessary after installing and activating them 🙂
I hope that answers your question but let me know if I can clarify anything else, here.