Principles of Transaction Processing for the Systems Professional (The Morgan Kaufmann Series in Data Management Systems)

By Philip A. Bernstein, Eric Newcomer

Principles of Transaction Processing is a transparent, concise advisor for anyone
involved in constructing purposes, comparing items, designing systems,
or engineering items. This ebook offers an realizing of the internals of
transaction processing platforms, describing how they paintings and the way top to exploit them.
It comprises the structure of transaction processing screens, transactional
communications paradigms, and mechanisms for improving from transaction and
system failures.

Use of transaction processing structures in enterprise, undefined, and
government is expanding swiftly; the emergence of digital trade on
the net is growing new calls for. therefore, many builders are
encountering transaction processing purposes for the 1st time and need
a useful rationalization of suggestions. software program engineers who construct and
market working platforms, communications structures, programming instruments, and
other items utilized in transaction processing purposes also will benefit
from this thorough presentation of ideas. wealthy with examples, it
describes advertisement transaction processing platforms, transactional aspects
of database servers, messaging platforms, web servers, and
object-oriented structures, in addition to each one in their subsystems.

* Easy-to-read descriptions of fundamentals.
* actual global examples illustrating key points.
* specializes in sensible concerns confronted via developers.
* Explains so much significant items and criteria, together with IBM's CICS, IMS, and MQSeries; X/Open's XA, STDL, and TX; BEA platforms' TUXEDO; Digital's ACMS; Transarc's Encina; AT&T/NCR's most sensible finish; Tandem's Pathway/TS; OMG's OTS; and Microsoft's Microsoft Transaction Server.

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Single-threaded consumers can use the PathSend API in synchronous or asynchronous mode, as in local TUXEDO. Transactions are controlled by way of the Tandem transaction supervisor, known as the TM/MP. Updates to facts are logged to an audit dossier, from which TM/MP manages a number of varieties of restoration. there's one log in step with node. TM/MP offers a approach logging carrier for either itself (as a TM), and for the entire source managers (NS SQL, Enscribe, NS TUXEDO /Q, and so on. ). All updates for a transaction are 5. nine Pathway/TS a hundred seventy five determine five. 29 Tandem help for a number of TP video display Personalities TS/MP andTM/MP supply TP video display and transaction administration providers for Pathway/TS, NonStopTUXEDO, and the PTP (C1CS) API. dad or mum and Open procedure providers working platforms are layered on a standard NonStop Kernel. written as a unmarried log write, regardless of what percentage source managers are concerned, thereby minimizing the variety of I/Os consistent with transaction to enhance functionality and scalability. Tandem's source managers offer fault tolerance via disk mirroring and sizzling backup and supply upward scalability via facts partitioning and parallel processing. method server approaches normally run as method pairs to make sure excessive availability. Tandem helps the TUXEDO and CICS programming interfaces on NSK, utilizing Tandem's fault-tolerant and parallel processing functions to supply excessive availability, functionality, and scalability (see determine five. 29). in addition they interoperate with implementations of these TP displays outdoors of the Tandem setting. by utilizing a standard set of providers, some of the TP computer screen techniques can interoperate with one another and get some great benefits of Tandem's communications mechanism and server sessions. The Parallel Transaction Processing providers (PTP) for the CICS API surroundings reproduces the CICS MVS/ESA V3. three API in the mum or dad surroundings. PTP helps the CICS intersystem communique facility, together with transaction routing, disbursed software hyperlink, functionality transport, and program-to-program communications. it could possibly interoperate with different implementations of CICS through LU6. 2, yet doesn't aid Syncpoint. NonStop TUXEDO is applied within the OSS surroundings. TUXEDO servers, like PTP and Pathway servers, are applied utilizing server periods that entry Tandem source managers and interoperate with TUXEDO on different systems. All 3 TP display screen environments interoperate in the Tandem setting and percentage an identical transaction supervisor and TP computer screen companies. Presentation Server Pathway used to be brought within the days of low-function terminals. So its presentation server, TCP, supported Tandem's terminal units through a multithreaded 176 bankruptcy 5—Transaction Processing visual display unit Examples strategy, the place each one thread maintained a context for a terminal and initiated a request on behalf of the person. afterward, Tandem unfolded the TCP interface for entry from different units, together with computers, workstations, and precise units resembling ATMs, fuel pumps, and bar code readers. Tandem created specified diversifications of the TCP to deal with interactions with those varieties of units.

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