CA IDMS DLI Transparency Syntax Generator › The CA IDMS DLI Transparency Syntax Generator › Syntax Generator Output

Syntax Generator Output

The syntax generator produces source statements for a CA IDMS/DB schema, DMCL, and subschema and a CA IDMS DLI Transparency IPSB.

Schema, DMCL, and Subschema Source

The schema source statements produced by the syntax generator define CA IDMS/DB areas, record types, and set types corresponding to the databases, segments, and parent/child (hierarchical) relationships defined in the DL/I DBD control blocks.

The DMCL source statements define how the CA IDMS/DB areas are to be mapped to the physical database files. They are derived from information in the DL/I DBD control blocks.

The subschema source statements define the CA IDMS/DB logical views that correspond to the views defined in the DL/I DBD control blocks.

You can input the generated source definitions to the appropriate CA IDMS/DB compilers to create load modules for use with the IPSB compiler, the CA IDMS DLI Transparency load utility, and the CA IDMS DLI Transparency run-time interface.

IPSB Source

The IPSB source statements define the correspondences between the DL/I database referenced by the DL/I application and the CA IDMS/DB database accessed by the CA IDMS DLI Transparency run-time interface.

The resulting IPSB source statements are organized as follows:

• IPSB SECTION—Relates the IPSB being defined to the corresponding DL/I program specification block (PSB)
• AREA SECTION—Identifies the CA IDMS/DB database areas that are to be readied by the CA IDMS DLI Transparency run-time interface in any usage mode other than shared retrieval (the default)
• RECORD SECTION—Names the CA IDMS/DB record types needed to service DL/I calls and defines the DL/I fields to be referenced by the DL/I calls
• INDEX SECTION—Provides the information necessary to relate CA IDMS/DB records and sets to DL/I secondary index structures and HIDAM index structures that are used and/or maintained by the CA IDMS DLI Transparency run-time interface
• PCB SECTION—Replaces the program communication blocks (PCBs) defined for the PSB

After reviewing the IPSB source statements, you can input them to the IPSB compiler to create an IPSB load module for use with the CA IDMS DLI Transparency run-time interface.

Special IPSB Load Module

To execute the CA IDMS DLI Transparency load utility, you need a special IPSB load module. You produce a load IPSB by specifying the LOAD option in the GENERATE IPSB statement.

For specific considerations that apply only to the load IPSB, see CA IDMS DLI Transparency Load Utility.