Book Image

Effortless App Development with Oracle Visual Builder

By : Ankur Jain
Book Image

Effortless App Development with Oracle Visual Builder

By: Ankur Jain

Overview of this book

Organizations are moving their applications, data, and processes to the cloud to reduce application costs, effort, and maintenance. However, adopting new technology poses challenges for developers, solutions architects, and designers due to a lack of knowledge and appropriate practical training resources. This book helps you get to grips with Oracle Visual Builder (VB) and enables you to quickly develop web and mobile applications and deploy them to production without hassle. This book will provide you with a solid understanding of VB so that you can adopt it at a faster pace and start building applications right away. After working with real-time examples to learn about VB, you'll discover how to design, develop, and deploy web and mobile applications quickly. You'll cover all the VB components in-depth, including web and mobile application development, business objects, and service connections. In order to use all these components, you'll also explore best practices, security, and recommendations, which are well explained within the chapters. Finally, this book will help you gain the knowledge you need to enhance the performance of an application before deploying it to production. By the end of this book, you will be able to work independently and deploy your VB applications efficiently and with confidence.
Table of Contents (23 chapters)
1
Section 1: Exploring the Building Blocks of VB
5
Section 2: Working with Data and Services
10
Section 3: Building Web and Mobile Apps Using Various VB Components
15
Section 4: Security, Recommendations, Best Practices, and Troubleshooting

Understanding variables, their types, and their scopes

Variables in any programming language play a vital role and they are used to store any type of information, such as names, contact numbers, ages, and so on. Similarly, VB variables are also used to store information that can be referred to at any place in the application depending upon the scope of the variable.

Different types of variables that can be created are as follows:

  • Primitive: These are simple variables such as String, Number, or Boolean.
  • Complex variables: These are complex variables used to store data structures, such as Employee or Address.
  • Built-in variable: These are variables that are used to get the metadata of the application, such as logged-in user information, page information, application information, and so on.

You can set the default value of a variable using the defaultVariable property of the variable.

Types are complex variables that define the data type and structure of a...