What does the MDB installer do that requires sysadmin privilege during CA Automation Point installation?

Document ID : KB000012212
Last Modified Date : 14/02/2018
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Introduction:

We are upgrading from CA Automation Point r11.4 to r11.5, and were told that the account the MDB installer uses to authenticate with MS SQL Server and install the MDB as part of the CA Automation Point installation requires Sysadmin privileges for the SQL Server instance where it will install the MDB. 

Question:

What does the MDB installer do that requires sysadmin privilege?

Answer:

The MDB installer requires Sysadmin privilege because it uses the "Trusted Authentication". 

Additional Information:

Here is some info about what Trusted Authentication means in SQL Server context.