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

Querying Data with Oracle XQuery


Starting with Oracle Database 10g Release 2, you can take advantage of a full-featured native XQuery engine integrated with the database. With Oracle XQuery, you can accomplish various tasks involved in developing PHP/Oracle XML applications, operating on any kind of data that can be expressed in XML.

The following figure shows the data sources with which Oracle XQuery can work.

As you can see from the figure, XQuery can be used to query any data stored in the database and out of it.

Note

Please note that XQuery is not available in the Express Edition of Oracle Database. For more information on Oracle XQuery, you can refer to Oracle documentation: chapter Using XQuery with Oracle XML DB in the Oracle XML DB Developer's Guide. You can also refer to the XQuery 1.0: An XML Query Language W3C Recommendation at http://www.w3.org/TR/xquery/.

Using XQuery to Construct XML from Relational Data

In the preceding sections, you saw several examples of how to construct XML...