FairCom SQL for PHP

Relationships

php.sql\tutorials\PHP_Tutorial2.php

Now we will build some table/file relationships using the FairCom DB PHP Interface.

This tutorial will advance the concepts introduced in the first tutorial by expanding the number of tables. We will define key columns/fields and create specific indexes for each table to form a relational model database.

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 #2: Relational Model and Indexing

Here we add a bit more complexity, introducing multiple tables, with related indices in order to form a simple "relational" database simulating an Order Entry system. Here is an overview of what will be created:

JDBC Relational Picture

Initialize() - Connects to the FairCom Database Engine.
Define() - Defines and creates the "custmast", "custordr", "ordritem" and the "itemmast" tables/files with related indexes.
Manage() - Adds some related rows/records to all tables/files. Then queries the database.
Done() - Disconnects from FairCom Database Engine.

Note our simple PHP script:

<?php

print("<html>\n");

print("<head>\n");

print("\t<title>PHP Tutorial 2</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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