|Oracle® Application Express API Reference
Part Number E13369-01
Oracle Application Express API Reference describes the Application Programming Interfaces, referred to as APIs, available when programming in the Oracle Application Express environment.
This preface contains these topics:
This document contains the following chapters:
|APEX_UI_DEFAULT_UPDATE||You can use the
|APEX_PLSQL_JOB||You can use
|APEX_LANG||You can use
Note:In release 2.2, Oracle Application Express APIs were renamed using the prefix
APEX_. Note that API's using the previous prefix
HTMLDB_are still supported to provide backward compatibility. As a best practice, however, use the new API names for new applications unless you plan to run them in an earlier version of Oracle Application Express.
Oracle Application Express API Reference is intended for application developers who are building database-centric Web applications using Oracle Application Express. The guide describes the APIs available when programming in the Oracle Application Express environment.
To use this guide, you need to have a general understanding of relational database concepts as well as an understanding of the operating system environment under which you are running Oracle Application Express.
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Many books in the documentation set use the sample schemas of the seed database, which is installed by default when you install Oracle. Refer to Oracle Database Sample Schemas for information on how these schemas were created and how you can use them yourself.
For additional documentation available on Oracle's Technology Network, please visit the Oracle Application Express web site located at
For additional application examples, please visit the Oracle by Examples (OBEs) Application Express page, located on Oracle's Technology Network. The OBEs provide step-by-step examples with screenshots on how to perform various tasks within Application Express.
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For a description of PL/SQL subprogram conventions, refer to the Oracle Database PL/SQL Language Reference. This document contains the following information:
Specifying subprogram parameter modes
Specifying default values for subprogram parameters
Overloading PL/SQL subprogram Names
The following text conventions are used in this document:
|boldface||Boldface type indicates graphical user interface elements associated with an action, or terms defined in text or the glossary.|
|italic||Italic type indicates book titles, emphasis, or placeholder variables for which you supply particular values.|
||Monospace type indicates commands within a paragraph, URLs, code in examples, text that appears on the screen, or text that you enter.|