DL/I and CA IDMS/DB

DL/I and CA IDMS/DB

This section contains the following topics:

About This Chapter

The DL/I Environment

Segments - The Basic Unit Of Data

Hierarchies - Physical Relationships Between Segments

Defining Segments

Logical Relationships Between Segments

Physical Databases

Physical Access Methods

Secondary Indexing (Index Databases)

Logical Databases

Program Communication Blocks

Program Specification Block

Definition Summary

DL/I Commands

The CA IDMS/DB Environment

DL/I and CA IDMS/DB Correspondences

Unsupported DL/I Features