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sergio verdezaCourses Plus Student 10,765 Points
When deploying to production, you may need to install an plugin to make database changes without visitors.
I'm not sure this question, I think I understand the Version Control but is not he correct answer.
I'm not familiar with this particular quiz, but in general, if you have a high traffic site, you will want to block visitors when doing database upgrades. This ensures that no visitor will get a completely broken page. WordPress core uses a
.maintenance file to put the site into maintenance mode and then deletes the file after all the updates have been completed.