Pathway/iTS TCP and Terminal Programming Guide

Introduction to TCP and Terminal Application
Programming
Compaq NonStop™ Pathway/iTS TCP and Terminal Programming Guide—426751-001
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The Enable Product
The Enable Product
The Enable product, used with the Enscribe database record manager, is a tool that
allows you to develop simple data management applications without using a
conventional programming language. You can use the Enable product to generate
SCREEN COBOL requester programs that use a generic server program provided with
the Enable product to record, maintain, or retrieve information stored within a single
database file or multiple database files. The Enable application performs these database
operations on a record-by-record basis and on one database file at a time. Finally, you
can use the Enable product to produce a PATHCOM command file to execute the
Enable application in the Pathway environment.
The Enable product reduces the amount of time needed to develop a simple application,
thereby decreasing application development costs. The Enable product, although not as
powerful as the Pathmaker product, allows you to:
•
Control the format of the screen displayed by the application
•
Limit the types of operations (delete, insert, read, or update) that the application can
perform on a database file
•
Define a method that the application uses to ensure the integrity of a database file
Although applications generated by the Enable product may lack the sophistication of
custom-designed application programs (Enable applications cannot perform either
mathematical calculations or ensure database consistency), you can quickly generate
Enable applications to meet immediate processing needs. Among its many uses, you
can use an Enable application as a prototype for a more complex application, a data
entry program, or a tool to maintain a small database. Enable applications can be readily
integrated into the Pathway environment.
Client/Server Development Tools
As mentioned earlier, the RSC/MP product facilitates client/server computing, allowing
workstation applications to access Pathway servers. A number of packaged tools and
utilities are commercially available for use with RSC/MP.
Transaction Processing Scenarios
This subsection provides two examples of how transactions from SCREEN COBOL
requesters are processed. The two scenarios illustrate the following:
•
A transaction from a Pathway/iTS terminal to a Pathway server
•
A transaction from an intelligent device to a Pathway server