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
1
Section 1: Fundamentals, Data Modeling, and Management
4
Section 2: Logic, Process Automation, and the User Interface
9
Section 3: Testing, Debugging, and Exercise
12
Mock Tests

Roll-up summary fields

In this section, we'll dive deeper into the use of roll-up summary fields. Let's summarize what we already know about them:

  • A roll-up summary field is a type of field only available on a master-detail relationship's parent object.
  • It is used to perform a calculation based upon a numeric value of child records.
  • A roll-up summary field will grab information from related child object records and perform some calculation with them. Possible calculations are COUNT, SUM, MIN, and MAX.
  • It is recalculated whenever you insert, update, or delete one or more of the children, whenever a detailed record is saved to the database.
  • You can create up to 25 RUS on a per object basis. This can be increased exceptionally, by submitting a case at Salesforce support, to a maximum of 40. 40 RUS on one object is the hard limit at the time of writing!
  • While a normal...