Oracle Application Express
The World Wide Web (WWW) was invented by renowned British computer scientist Sir Tim Berners-Lee in 1989. He had proposed three fundamental concepts that have today become ubiquitous to many. It provides us timely information, a way to access services, an
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Oracle Application Express The World Wide Web (WWW) was invented by renowned British computer scientist Sir Tim Berners-Lee in 1989. He had proposed three fundamental concepts that have today become ubiquitous to many. It provides us timely information, a way to access services, and more. These principles include the HyperText Markup Language (HTML), the Uniform Resource Identifier (URI) (also commonly known as URL), and the Hypertext Transfer Protocol (HTTP). URIs are human-friendly addresses on the Internet that allow us to identify and locate web resources, which are then transmitted over the network, to web browsers, using HTTP. The most common web resources are web pages formatted using HTML. The most basic web page is static and can be hosted on any server application that could present the content over HTTP. However, many web pages these days are data- driven and dynamic. Data is stored in a database and then presented as web pages using an intermediary that typically uses a programming language that helps render HTML. Oracle Application Express (APEX) plays that crucial role in transforming data in the Oracle Database into standards-compliant web pages. On the backend, APEX is driven by the robust and proven programming language PL/SQL that runs efficiently on the database. While on the browser, content is driven by Cascading Style Sheets (CSS), HTML, and JavaScript. In an Autonomous Database (ADB), there are no additional servers or applications to install. This full-stack web application environment comes preinstalled and ready to use. These are not the only essential ingredients needed to build secure web applications. We have to think about security issues like user authentication, data encryption, and access control (authorization). Application and data must also have a backup and recovery strategy. The APEX rapid application development platform offloads these
© Adrian Png and Luc Demanche 2020 A. Png and L. Demanche, Getting Started with Oracle Cloud Free Tier, https://doi.org/10.1007/978-1-4842-6011-1_11
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Chapter 11
Oracle Application Express
concerns to the network and database administrators and leaves software developers to focus on understanding the business, design the data schema, and implement the business logic. This chapter provides a quick overview of the technology; however, there is so much to discover and learn about the power of APEX and Low Code development. I will attempt to provide you sufficient information to help get a sense of what APEX can do for you. As a follow-up, I strongly encourage that you read the APEX official documentation, access the large collection of videos on YouTube (https://bit.ly/orclapex-youtube), and/or check out the vast number of books, including many published by Apress. The APEX development team maintains a web page (https://apex.oracle.com/ shortcuts/) with links to many of these resources, so check them out when you are done with this book.
Note Low Code development generally refers to the process of building functional applications using g
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