Call for Oracle support & training (800) 766-1884
Free Oracle Tips

Corporate Oracle Training
Custom Oracle Training
Oracle New Features Training
Advanced Oracle DBA Classes
Oracle Tuning Courses
Oracle Tips & Tricks
Oracle Training Links
Oracle Training Links
Oracle Training Links

We are top for USA Oracle Training Clients


Free Oracle Tips


Free Oracle App Server Tips


Oracle support

Oracle training

Oracle tuning


Remote Oracle

Custom Oracle Training


  Oracle Tips by Burleson

Page Processing

Although this chapter is titled Page Processing, information regarding the logic controls included in the Page Processing alone is not enough, coverage of their use during Page Rendering is also necessary.  There are also application level logic controls which execute when HTML DB sessions are created during login. 

Using Page Rendering and Page Processing effectively can be somewhat confusing when learning to develop applications using HTML DB.  When I first saw the Page Processing region, I was confused and did not know how to use it.  After all, I’ve been used to having to write every line of code in other programming languages. 

The fact is, Page Processing in HTML DB is a clever method of providing logic control to developers of web pages who do not have a programming background.  The tricky part is understanding what is happening, why it is happening, and when it is happening.   This chapter will help answer those questions.

The Page Processing region is shown in Figure 12.1.  This example is taken from application page 29 of the Sample Application included with HTML DB.

The Page Processing region contains the logic that is to be executed when the page is submitted.  The items in the Page Processing region are called Logic Controls.  When the page is submitted, the HTML DB engine considers each of the logic controls in a specific order determined by the developer.  The Conditions set on each of the logic controls is the deciding factor on whether they will be executed.  It is just like a big IF … THEN statement for all the logic controls.

There is an exception to this rule.  If one of the processes or branches navigates off the page before the logic control is considered by the HTML DB engine, it will be ignored.  This navigation is usually performed in a Before Computation, Before Validation, or Before Processing branch.  Branches will be covered later in the chapter.

The above book excerpt is from:

Easy HTML-DB Oracle Application Express

Create Dynamic Web Pages with OAE

ISBN 0-9761573-1-4   

Michael Cunningham & Kent Crotty  

Download your Oracle scripts now:

The definitive Oracle Script collection for every Oracle professional DBA


Oracle performance tuning book



Oracle performance tuning software

Oracle performance tuning software
Oracle performance Tuning 10g reference poster
Oracle training in Linux commands
Oracle training Excel


email BC:

Copyright © 1996 -  2014 by Burleson Inc. All rights reserved.

Oracle® is the registered trademark of Oracle Corporation.