Hey @PraveenG5,
I saw that you also posted in Issue with DB connection with certificate - #4 by PraveenG5. My question there is valid for you to. Please provide more information about which database you are trying to connect to and what you have tried.
I am not sure how you are using Flowable, but if you are using it with Spring Boot, then it is a matter of configuring the database using the default Spring Boot properties.
Cheers,
Filip