
22 Introduction to the New Maineframe: z/VSE Basics
5. Programs running on the mainframe computer perform updates and inquires
to the database management system (for example, DB2).
6. Specialized disk storage systems store the database files.
1.9 Roles in the mainframe world
Mainframe systems are designed to be used by large numbers of people. Most of
those who interact with mainframes are end users (people who use the
applications that are hosted on the system). However, because of the large
number of end users, applications running on the system, and the sophistication
and complexity of the system software that supports the users and applications ...