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-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE chapter SYSTEM "chapter.dtd">
-
-<chapter>
- <header>
- <copyright>
- <year>1999</year><year>2016</year>
- <holder>Ericsson AB. All Rights Reserved.</holder>
- </copyright>
- <legalnotice>
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-
- </legalnotice>
-
- <title>Introduction to cosTransactions</title>
- <prepared>Niclas Eklund</prepared>
- <docno></docno>
- <date>1999-04-26</date>
- <rev></rev>
- <file>ch_introduction.xml</file>
-</header>
-
- <section>
- <title>Overview</title>
- <p>The cosTransactions application is a Transaction Service compliant with the <url href="http://www.omg.org">OMG</url>
- Transaction Service CosTransactions 1.1.
- </p>
-
- <section>
- <title>Purpose and Dependencies</title>
- <p><em>cosTransactions</em> is dependent on <em>Orber version 3.0.1</em> or later(see the Orber
- documentation), which provides CORBA functionality in an Erlang environment.</p>
- <p><em>cosTransactions</em> is dependent on <em>supervisor/stdlib-1.7</em> or later.</p>
- <p>Basically, cosTransaction implements a <em>two-phase commit protocol</em> and allows objects running
- on different platforms to participate in a transaction.</p>
- </section>
-
- <section>
- <title>Prerequisites</title>
- <p>To fully understand the concepts presented in the
- documentation, it is recommended that the user is familiar
- with distributed programming, CORBA and the Orber application.
- </p>
- <p>Recommended reading includes <em>CORBA, Fundamentals and Programming - Jon Siegel</em> and <em>Open Telecom Platform Documentation Set</em>. It is also helpful to have read
- <em>Concurrent Programming in Erlang</em> and, for example, <em>Transaction Processing: concepts and techniques - Jim Gray, Andreas Reuter</em>.</p>
- <note>
- <p>The cosTransaction application is compliant with the OMG CosTransactions specification 1.1. Using
- other vendors transaction service, compliant with the OMG CosTransactions specification 1.0, may
- not work since the <c>'TRANSACTION_REQUIRED', 'TRANSACTION_ROLLEDBACK'</c> and <c>'INVALID_TRANSACTION'</c>
- exceptions have been redefined to be system exceptions, i.e., used to be transaction-specific ('CosTransactions_Exc').</p>
- </note>
- </section>
- </section>
-</chapter>
-