CA IDMS VSAM Transparency Architecture › Control Tables

Control Tables

FMT and TNT Control Tables

There are two types of control tables in CA IDMS VSAM Transparency:

• The file management table (FMT) defines the correspondences between VSAM data structures and CA IDMS/DB records and sets.
• The transaction name table (TNT) maps the transaction names of CICS applications to CA IDMS/DB subschema names.

Each control table must be compiled separately and stored in a load library before runtime.

Table Requirements

The following requirements apply to these tables:

• Control tables are compiled from user-supplied statements.
• Control tables are linked into the CA IDMS/DB load library.
• Control tables are specified by name in the JCL.