User for the database? What permissions do you need?

Hi all,
I confess that I am new to this implementation issue, so I prefer to find some answers here in the forum.
The DBA has asked me something that I have not been able to answer very well,
What type of user is required in the bd for the ucmdb?
What permissions should I have?
The schema is defined by the dba?
How often should I request a bk from the bd?

I have also been told that in this bd this information of another product OMi and APM, is this something normal?

What recommendations should I have on this topic?
* The bd is oracle and UCMDB 2019.02

I appreciate your contributions.