CM22 IMS Physical Organization of Databases Unit 8 (HDAM)

This unit provides an overview of the HDAM access method. Features and functions covered include:

• HDAM Randomizer routines

• Coding HDAM DBD parameters

• IMS management of Synonym chains in HDAM databases

After completing this unit, you should be able to

•Describe the characteristics of the HDAM Access Method

•Code a DBD using the various parameters necessary for an HDAM database

•Explain the concept of Randomizer Synonym chains and how IMS manages synonyms

0:00:18 HDAM

0:08:25 Example of HDAM parameters

0:24:21 HDAM Insert example

0:46:41 HDAM DBD

0:57:29 Coding the RMNAME parameter

1:10:52 Sequential Randomizer

1:17:30 Characteristics of HDAM

1:17:58 HDAM data sets