Authentication is a very important process, whose purpose is to determine whether someone or something is, in fact, who or what it claims to be.
In this chapter, you'll learn basic stuff about some of the different authentication methods supported by Oracle Database 12c. Also, a brief overview about creating and using database roles will be given.
There are three new administrative privileges introduced in Oracle Database 12c (sysbackup, syskm, and sysdg). Their purpose is to enable better separation of duties and they are designed in such a way to also enable implementation of the least privilege principle. Although it may seem that implementation of this principle in systems is easy or straightforward, usually it's quite tricky.