From Serebra Learning Corporation
OS 390 MVS Concepts and Facilities 
...Virtual
Storage environment. It explains concepts and facilities, and its role within the S/390 system. The course covers
MVS functions and system programs, data storage management, and application development.The course explains the role of MVS and identifies the data processing resources affected by the MVS operating system. The first topic presents a broad overview of MVS functions, and the
more...
OS 390 C Programming 
... are needed before designing or coding applications using
Virtual Storage Access Method (
VSAM). The course discusses how VSAM can add records to, and delete records from, a
KSDS, and how VSAM manages the space within the data component of the KSDS when performing additions or deletions. It also describes the organization and function of an alternate index. The course shows how an alternate
more...