Exam 1z0-931-20 topic 1 question 24 discussion

A Corporation is building a web application to allow its customers to schedule service requests online. There is also a need to run operational reports at times during non-peak hours. The architecture team is debating whether such reports should be run on the OLTP database or in a separate data mart. The DBA
Manager does not want to add anymore admin responsibility to the team and is looking for a database option that's low to zero maintenance, but meets their strict performance requirements as well.
Which Oracle Cloud Infrastructure database service is appropriate for this scenario? (Choose the best answer.)