IMS Essentials Part 1 IMS Database Manager 

...tials
Part 1:
Database Manager, you are introduced to the
IMS Database Manager. IMS hierarchical databases are covered, and the
Data Language/I (DL/I) function codes used to query and update the databases within application programs. You are introduced to database change logging and the various database recovery utilities used in
IMS. Finally, you learn about IMS hierarchic access methods and
more...