Based on the SMC metric, the best package benchmarked
is Microsoft SQL Server 2005 over Windows XP. A key
aspect that allows this result is an overall better integration
with the operating system (allowing, for instance, utilizing
the Windows Update mechanism for keeping the DBMS
software up to date with little intervention). The feature of
client applications roles (that allows to better support the
development of applications with the ability to identify the
end users behind database connections based on database
authentication) and some extra backup features not present in
the other DBMS also contributed to this result. However, the
score for all the packages is not that different, which
suggests that, in general, these packages (operating systems
and database engines) tend to implement the same type of
security features and mechanisms (despite being open source
or not). The worst scored package was MySQL Community
Edition over Red Hat Enterprise Linux 5.