This section describes the components and the structure of the Natural interface to VSAM.
This section covers the following topics:
The Natural interface to VSAM consists of the following components:
NVSNUC module, which is mandatory,
environment-independent, and delivered as a load module only.
The Natural parameters specific to VSAM, defined in the Natural parameter module.
The I/O module, which is mandatory, differs depending on the actual environment, and is delivered in source form only.
The modules necessary when running with VSAM system files; they are optional and delivered as load modules only.
The user exits.
Callable system services.
Natural for VSAM is fully (E)LPA or SVA-compliant for multiple environments (for example, CICS, Com-plete and batch). The Natural parameter module and the appropriate I/O module must be linked to the front-end module.