In MySQL, a role is a group of named privileges that can be assigned to users. When creating a database application with a lot of users, managing their permissions individually can be a programming nightmare. This is where system roles and permissions come in. For instance, take a hypothetical bank database application. It might have `5` system developers, `3` managers, several hundred bank clerks, and maybe `2` auditors. In such a scenario, the `5` system developers should be granted full acces......