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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Advantages of the Pathway Environment
If you are writing SCREEN COBOL requesters that communicate with Compaq
NonStop™ TUXEDO servers, refer also to the manuals for the NonStop™ TUXEDO
system, particularly the Compaq NonStop™ TUXEDO System Application Development
Guide and the NonStop™ TUXEDO System Pathway Translation Servers Manual.
If you are writing Pathsend requesters or Pathway servers, refer to the
NonStop™ TS/MP Pathsend and Server Programming Manual.
If you are writing web clients created from SCREEN COBOL requesters, refer to the
Compaq NonStop™ Pathway/iTS Web Client Programming Manual.
Advantages of the Pathway Environment
NonStop™ TS/MP and Pathway/iTS provide ease of development, manageability, and
the fundamental strengths and benefits of Compaq NonStop™ Himalaya systems. The
strengths and benefits of NonStop™ Himalaya systems include data integrity, fault
tolerance, high performance and low cost, system security, scalability, and distributed
processing. The following paragraphs describe how NonStop™ TS/MP, Pathway/iTS,
and related products—known together as the Pathway environment—benefit the
application designer and programmer. The Introduction to NonStop™ Transaction
Processing provides a fuller description of how all the fundamentals of NonStop™
Himalaya systems apply to transaction processing.
Ease of Development
Development costs are one of the highest expenses associated with online transaction
processing (OLTP) systems. The more sophisticated the features and safeguards that are
built into your OLTP application—for example, multiprocessing, fault tolerance, and
data integrity—the greater the costs. When you use NonStop™ TS/MP, Pathway/iTS,
and related Compaq transaction processing products for NonStop™ Himalaya systems
to create your OLTP applications; development time and efforts, and therefore costs, can
be measurably reduced.
This cost reduction occurs because:
•
NonStop™ TS/MP, Pathway/iTS, and related products provide the most complex
components of an OLTP application:
•
NonStop™ TS/MP includes the transaction monitor (PATHMON), the
command interpreter for management (PATHCOM), and the means for
interprocess communication.
•
Pathway/iTS provides a multithreaded terminal control process (TCP) for
communication with terminals, including fault tolerance and transaction
protection.
•
The NonStop™ Transaction Manager/MP (NonStop™ TM/MP) product
provides transaction management.
•
Compaq makes valuable application development tools and utilities available for the
Pathway environment. These development tools and utilities can significantly
reduce the amount of programming time and effort required to generate a working
Pathway application.