FairCom SQL for PHP

Transaction Processing

php.sql\tutorials\PHP_Tutorial4.php

Now we will discuss transaction processing as it relates to the FairCom DB PHP Interface.

Transaction processing provides a safe method by which multiple database operations spread across separate tables/files are guaranteed to be atomic. By atomic, we mean that, within a transaction, either all of the operations succeed or none of the operations succeed. This "either all or none" atomicity ensures that the integrity of the data in related tables/files is secure.

Like all other examples in the c-tree tutorial series, this tutorial simplifies the creation and use of a database into four simple steps: Initialize(), Define(), Manage(), and You’re Done()!

Tutorial #4: Transaction Processing

Here we demonstrate transaction control.

Initialize() - Connects to the FairCom Database Engine.
Define() - Defines and creates our four tables/files.
Manage() - Adds rows/records to multiple tables/files under transaction control.
Done() - Disconnects from FairCom Database Engine.

Note our simple PHP script:

<?php

print("<html>\n");

print("<head>\n");

print("\t<title>PHP Tutorial 4</title>\n");

print("</head>\n");

print("<body>\n");

// Implementation of the concept of "init, define, manage and you're done..."

$session = Initialize();

Defines($session);

Manage($session);

Done($session);

We suggest opening the source code with your own editor.

Continue now to review these four steps.

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