I need to learn about database systems, but first I need to know which is the safest. For example, information like government data need to be protected, so what is the best database to handle this kind of information, I know that there are no complete database systems that are fully protected, but at least I need a system that can't lose information.
And I have another question, what's your thought about Microsoft SQL Server from a security perspective, and how many vulnerabilities does it have compared to other database systems?