COBOL for VSEn

The architecture of COBOL for VSEn consists of several key components. The core component is the COBOL compiler itself, which translates COBOL source code into object code. This object code is then processed by the linkage editor, which combines it with necessary runtime libraries from the Language Environment to create an executable program.

The compiler interacts with the z/VSE operating system through system calls for tasks such as file I/O and memory management. The Language Environment provides runtime services, including memory management, exception handling, and support for various COBOL features. The compilation process typically involves submitting JCL that invokes the compiler and linkage editor.

Example JCL: `// EXEC PROC=COBCOMP`. The compiler reads COBOL source code, performs syntax and semantic analysis, and generates object code. The linkage editor then resolves external references and creates the executable.

The executable program relies on the Language Environment for its runtime environment. The z/VSE operating system provides the underlying infrastructure for file storage, security, and system resources. The system uses JCL for configuration and control.

Monitoring and logging are provided by the z/VSE system logs. Authentication and access control are managed at the z/VSE level.