NET/MASTER Network Control Language (NCL) Programmer's Guide

Pathway, NonStop NET/MASTER MS, and NCL
Working With Pathway Server Classes
15–2 106160 Tandem Computers Incorporated
For the complete syntax of verbs, refer to the NonStop NET/MASTER NCL Reference
Manual. For the complete syntax of NonStop NET/MASTER MS commands, refer to
the NonStop NET/MASTER MS Command Reference Manual.
Note The Pathway transaction processing system is a group of related software tools and interfaces that
enables you to develop, install, and manage online transaction processing applications. This section
assumes that you are familiar with Pathway tools, interfaces, and concepts.
Refer to the Introduction to Pathway and the Pathway PATHCOM Reference Manual for introductory
information about Pathway.
Refer to the Pathway System Management Guide and Pathway Management Programming Commands
Manual for information about how to configure and manage a Pathway system.
Refer to the Pathway Application Programming Guide for information about developing Pathway
applications. This manual has detailed information about the PATHSEND interface, which is used by
NCL processes to communicate with existing Pathway server classes.
Refer to the Pathway Management Programming Event and Error Messages Manual for information about
the event and error messages generated by Pathway.
Refer to the appropriate programming manual for details about the language you are using to write a
Pathway server program.
Pathway, NonStop
NET/MASTER MS, and
NCL
NonStop NET/MASTER MS can make an existing Pathway server class available for
its use. When it is available, an NCL process can act as a PATHSEND requester to
communicate with the server class.
A server process typically controls access to a database. A requester process typically
makes requests of a server process, for example, to add, update, or delete records in a
database. Using an NCL process to act as a PATHSEND requester in addition to an
existing requester written in another language, offers you increased flexibility in
communicating with a server process. You can use either or both requesters to
communicate with the same server process.
To best see how NonStop NET/MASTER MS and NCL can fit into an existing
Pathway environment, it is useful to review the main processes in a Pathway system.
Figure 15-1 is a simplified view of a Pathway system with which NonStop
NET/MASTER MS can communicate.