TMF Introduction (G06.26+)

TMF Overview

HP NonStop TMF Introduction—522414-002

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Applications

Several different types of applications can use TMF for transaction management,

including the following:

•

HP NonStop SQL provides SQL preprocessors and a SQL compiler. With these

tools, programmers can create their own programmatic interfaces to a SQL

database by compiling and executing applications that use embedded SQL

statements to query the database.

•

HP NonStop TUXEDO serves as an open transaction processing monitor for HP

NonStop servers running the HP NonStop Open System Services (OSS)

environment.

Pathmaker is an application development tool that helps programmers define screens

and transactions for applications. After programmers design the screens, the data

items, and the transactions, Pathmaker can generate requesters, servers, and a

configuration file. Pathmaker can generate applications for both SQL databases and

Enscribe databases.

Application Languages

Application languages are used to code programs that access audited database files.

SCREEN COBOL is the language designed for displaying and receiving data in screen

programs, which are referred to as “requesters.” Other languages— C, C++, HP

COBOL, FORTRAN, and TAL—can be used to code servers. SQL supports SQL

statements embedded in host programs in such languages as C, C++, HP COBOL,

and TAL to access a SQL database.

Application Control Subsystem

The HP NonStop Pathway/iTS product provides a simplified, terminal-oriented

interface for transaction design and control. Pathway/iTS allows programs that are

written to run at a single terminal to be used at hundreds of terminals. Most

transactions are started by users entering them through terminals, so Pathway/iTS

provides for communication with TMF about transactions in progress. The TS/MP

software provides the underlying server support for Pathway/iTS.

Transaction Management Facility

TMF maintains consistency for the databases that are changed by the transactions,

and ensures that transactions access only consistent data.

Database Management Software

SQL is a distributed relational database management system. SQL requires TMF to

protect the data dictionary and uses it to protect user data in audited tables.