Question: SEPM 14.2 will be installed in my environment on Windows Server 2016 What are the system requirements for SQL DB 2016?
Requirements here:
http://www.symantec.com/docs/INFO3982
Depends on how many clients but 4 GB RAM should suffice.
You can install SEPM on SQL 2016 DB.
Check the MS document for SQL 2016 requirements
https://docs.microsoft.com/en-us/sql/sql-server/install/hardware-and-software-requirements-for-installing-sql-server?view=sql-server-2017