I realize this question is a year and a half old at this point, but just wanted to provide an answer.
The tables for Questions for Confluence are stored in the database with the prefix AO_B1DBB9. We have a large list of the AO table prefixes and the plugins they go with on this Community article.
Additionally, if you've still got a particular plugin installed that you're curious about, you can navigate to the following URL on your server instance and get a a breakdown of what tables are used by which plugin in Confluence:
Hi Atlassian's, How is your journey with #Atlympics 2021 so far....excited! Me too, same excitement. Here's my typical team planning and vision dashboard which I used to share to my management and ...
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