I think it is kind of unclear yet to Community members what you are looking at. With some likeliness you are trying to access Jira's database for reporting purposes and/or you are trying in first step how data is organized.
In many posts here in Community one can read that reporting off Jira's database will not bring the desired output - the schema is hard to understand and not made for reporting.
Instead, accessing the REST API could be an alternative:
To be honest, I am not familiar with the term "transaction periods" so it could be that this would not help you either.
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events