Book Image

Salesforce Platform Developer I Certification Guide

By : Jan Vandevelde, Gunther Roskams
Book Image

Salesforce Platform Developer I Certification Guide

By: Jan Vandevelde, Gunther Roskams

Overview of this book

Salesforce Lightning Platform, used to build enterprise apps, is being increasingly adopted by admins, business analysts, consultants, architects, and especially developers. With this Salesforce certification, you'll be able to enhance your development skills and become a valuable member of your organization. This certification guide is designed to be completely aligned with the official exam study guide for the latest Salesforce Certified Platform Developer I release and includes updates from Spring '19. Starting with Salesforce fundamentals and performing data modeling and management, you’ll progress to automating logic and processes and working on user interfaces with Salesforce components. Finally, you'll learn how to work with testing frameworks, perform debugging, and deploy metadata, and get to grips with useful tips and tricks. Each chapter concludes with sample questions that are commonly found in the exam, and the book wraps up with mock tests to help you prepare for the DEV501 certification exam. By the end of the book, you’ll be ready to take the exam and earn your Salesforce Certified Platform Developer I certification.
Table of Contents (15 chapters)
Free Chapter
Section 1: Fundamentals, Data Modeling, and Management
Section 2: Logic, Process Automation, and the User Interface
Section 3: Testing, Debugging, and Exercise
Mock Tests

Apex variables, constants, and expressions

You have different types of variables that you can define in your class. In Chapter 3, Declarative Automation, we used a String (the most-used variable type) to define our movie's title, but there are more of these variable types that exist. If you are familiar with Java, you will recognize some of these types.

Besides the type, you can define whether the variable is visible or editable outside your class. Just like a user can view or edit a field in a record, a class can also view or edit a variable in another class.

We'll start by explaining the different data types available to you.

Apex data types

Each variable in Apex has a data type. This can be a primitive data type...