HP Integrity NonStop J-Series - Manual (Page 50)

TASK OVERVIEW
Establishing a PATHWAY System
ESTABLISHING A PATHWAY SYSTEM
An ENABLE application must exist within a PATHWAY system.
PATHWAY, a part of the ENCOMPASS distributed data base management
system, supplies programs, procedures, and structures that define
and control requester and server processes (programs). PATHWAY
also provides a program that handles the terminal for your
application.
ENABLE supplies you with many of the components necessary to
establish a PATHWAY system. To establish such a system and
execute an ENABLE application, you must:
1. Create a PATHWAY monitor process (PATHMON). PATHMON controls
the activity of processes and devices within the PATHWAY
system.
2. Create a PATHCOM process (PATHCOM). PATHCOM acts as the
command interface to PATHMON.
3. Submit the PATHCOM command file, produced by ENABLE, to
PATHCOM, which then passes the information on to PATHMON.
PATHMON uses the information in the PATHCOM command file to:
• Define a Terminal Control Process (TCP)--The TCP controls the
screen and sends instructions to the General Server.
• Define the requester program generated by ENABLE--When
executed, the requester process accepts requests from the
screen and sends messages to the General Server.
• Define the General Server program supplied by ENABLE--The
General Server opens the data base file and implements the
request.
Figure 2-14, which is divided into two parts, illustrates the
events that occur when you (1) establish a PATHWAY system and (2)
execute an application.
Sections 4 and 5 provide more information about establishing a
PATHWAY system and executing an application.
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