Book Image

PHP Oracle Web Development: Data processing, Security, Caching, XML, Web Services, and Ajax

By : Yuli Vasiliev
Book Image

PHP Oracle Web Development: Data processing, Security, Caching, XML, Web Services, and Ajax

By: Yuli Vasiliev

Overview of this book

Oracle Database gets high marks for performance, reliability, and scalability. Building and deploying your PHP applications on Oracle Database enables you to combine the power and robustness of Oracle and the ease of use, short development time, and high performance of PHP. When used in a complementary way, PHP and Oracle allow you to build high-performance, scalable, and reliable data-driven Web applications with a minimum of effort.When building a PHP/Oracle application, you have two general options. The first is to use an Oracle database just to store data, performing all the operations on that data on the client side; the other is to use the database not only to store data, but also to process it, thus moving data processing to the data. While building the key business logic of a database-driven PHP application inside the database is always a good idea, you should bear in mind that not all of the databases available today allow you to do. The Oracle database, which offers record-breaking performance, scalability, and reliability, does. The partnership of Oracle and the open-source scripting language PHP is an excellent solution for building high-performance, scalable, and reliable data-driven web applications.This 100% practical book is crammed full of easy-to-follow examples. It provides all the tools a PHP/Oracle developer needs to take advantage of the winning combination. It addresses the needs of a wide spectrum of PHP/Oracle developers, placing the emphasis on the most up-to-date topics, such as new PHP and Oracle Database features, stored procedure programming, handling transactions, security, caching, web services, and Ajax.
Table of Contents (16 chapters)
PHP Oracle Web Development
Credits
About the Author
About the Reviewer
Preface

Chapter 3. Data Processing

Data processing is essential for any data-driven application. Whether you access database data or modify it, you perform data processing in one way or another. While in simple cases, data processing may involve a few steps, more sophisticated solutions typically perform multiple operations on the data, with branch logic based on the success or failure of any single operation involved.

For most PHP/Oracle applications, data processing takes place partly at the web/PHP server and partly at the Oracle database server. Even if you are dealing with an application that simply outputs the results of a query, you will need to perform at least two general steps: retrieve data from the database and then display the results to the user. In this case, the database server processes the query, producing the results, and the web/PHP server is responsible for formatting and displaying the query results. In more complex cases, you may have to perform some additional processing...