Security
Object-level security has to do with who can access an object and what they can do with the object after they have accessed it.
For example, you might want objects containing sensitive information to be unreadable by other applications and for objects with less sensitive information to be readable by everyone. Object-level security allows you to set an object’s access permissions by determining:
Authentication is the system identifying a user based on user id and password. MDS will authenticate users when they attempt to connect to the repository. Only valid users will be allowed access to the repository.