Book Image

Oracle Application Express 3.2 - The Essentials and More

Book Image

Oracle Application Express 3.2 - The Essentials and More

Overview of this book

Developing data-centric web applications can be a real challenge as it is a multi-disciplinary process. There are many technologies involved in the client side (HTML, CSS, JavaScript, and so on); the interaction with the database, on the server side; the typeless nature of the web environment; and above all, the need to put it all together. This needs to be done in a manner that will allow the end users to do their job in the simplest and most efficient way, while enriching their user experience. How often have you wished that developing such applications could be uncomplicated and straightforward? This book will show you that it's possible, and teaches you how to do it, using Oracle Application Express (APEX).With this practical guide to APEX, you'll learn how to easily develop data-centric web applications for the Oracle environment. The book covers the development cycle of an APEX application, reviewing the major APEX principles and building blocks chapter by chapter. It starts with the basic skills you need to get going when developing with APEX. Later, you will learn advanced issues, such as how to build tailor-made forms and reports, using APEX APIs, AJAX, and so on. It not only deals with the "How" but also with the "Why", and before long you will be able to understand APEX concepts, and use them to expand and enhance the built-in features, wizards, and tools.The book starts with the design phase, including building the necessary database objects infrastructure; continues with ways to implement the application logic (on the server side) and the User Interface (on the client side), whilst showing you how to enhance your applications' features and functionality according to your specific needs; and it ends with application deployment.The book emphasizes and clearly documents areas such as Globalization, Localization, and developing multi-lingual applications, and includes a special discussion about Right-To-Left (RTL) support for APEX applications, documented here for the first time.Throughout the book, there are many screenshots and snippets of code, taken from working APEX applications. The book is accompanied by demo APEX applications that you can download and install in your APEX environment, thoroughly analyze, and learn from as you read the book.
Table of Contents (30 chapters)
Oracle Application Express 3.2
Credits
About the Authors
About the Reviewers
Preface

Supporting Objects


When deploying an application we may often need to create or modify data, tables, stored procedures, and other database objects necessary for our application to run correctly. One way to deploy database changes is through SQL script files. In the SQL script files we enter DML and DDL statements for all required database changes. These scripts can then be run against the destination database schema to make the required changes. The SQL script files are separate to our application and means that there is an additional step on top of deploying the application source.

Supporting Objects is a function in APEX that can be used to create a single file for deployment. This file includes the application source together with any database changes, data load scripts, or static files. This means that we have a single file to deploy in our entire application. Using this approach is similar to having an installer for our application and is referred to as a Packaged Application in APEX...