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Programmatic Development Using Apex and Visualforce in Lightning Exper (DEX-450)

  • Tuition USD $4,500 GSA  $4,080.60
  • Reviews star_rate star_rate star_rate star_rate star_half 945 Ratings
  • Course Code DEX-450
  • Duration 5 days
  • Available Formats Classroom, Virtual

Are you a programmer who wants to understand how to customize applications programmatically on the platform? In this course, you will learn the core of the Apex programming language and Visualforce markup in order to customize your applications. You will get hands-on experience building data objects (sObjects) and programmatically retrieving, manipulating, and storing the data associated with those objects. You will write custom logic using Apex triggers and classes, and test that logic using the built-in testing framework. You will explore how Apex code interacts with declarative customizations on the platform, and the nuances of working on a multi-tenant platform. You’ll then examine common techniques for designing solutions in Apex. These activities will culminate in an exercise building a complex trigger that takes advantage of the declarative aspects of the platform. You will get hands-on experience writing Visualforce pages to customize your user interface and Visualforce controllers (in Apex) to modify the controller behavior behind the interface. You’ll also explore design techniques and the built-in testing framework around Visualforce.

Skills Gained

By the end of this course, you will be able to:

  • Create and modify objects using the declarative interface.
  • Write business logic customizations using Apex triggers and classes. Those customizations will use SOQL and DML.
  • Design programmatic solutions that take advantage of declarative customizations.
  • Describe how your trigger code works within the basics of the Save Order of Execution.
  • Describe some of the fundamental aspects of designing programs on a multi-tenant platform.
  • Write Visualforce markup and code to customize the user interface.
  • Use the built-in testing framework to test Apex and Visualforce.

Who Can Benefit

This course is designed for programmatic developers who are new to the platform, who need to be able to write programmatic customizations to both the business logic and user interface layers using Apex and Visualforce. (Please see prerequisites)


  • 1 year programming in Java (or another object-oriented programming language)
  • Basic data modeling for relational databases
  • Basic SQL
  • Basic HTML
  • Basic JavaScript

Course Details

Associated Certification

Certified Platform Developer

M1 Welcome

M2 Objects and Fields

  • Describe the capabilities of objects on the platform.
  • Create a custom object.
  • Create custom fields.
  • Create relationship fields.

M3 Work Effectively with Custom Objects and Fields

  • Create formula fields.
  • Create roll-up summary fields.
  • Describe the capabilities of record types.

M4 Programming with Apex

  • Describe key aspects of Apex that differentiate it from other languages, such as Java and C#.
  • Describe why Apex transactions and governor limits must be considered when writing Apex.
  • Execute simple Apex.
  • Use the sObject data type, the primitive data types, and basic control statements in Apex.

M5 Use SOQL to Query Your Org's Data

  • Write a basic query using Salesforce’s query language, SOQL.
  • Process the result of a query in Apex.
  • Create a query dynamically at run-time.

M6 Use SOQL to Query Parent-Child Relationships

  • Describe a relationship query.
  • Write a query that traverses a child-to-parent relationship.
  • Write a query that traverses a parent-to-child relationship.

M7 DML Essentials

  • List the differences between the ways you can invoke DML operations.
  • Write Apex to invoke DML operations and handle DML errors.

M8 Trigger Essentials

  • Describe what a trigger is used for.
  • Describe the syntax of a trigger definition.
  • Use trigger context variables.

M9 Classes

  • Describe how Apex classes are used.
  • Define an Apex class.
  • Determine what data an Apex class can access.

M10 The Save Order of Execution and Apex Transactions

  • Describe key points in the Order of Execution.
  • Describe how triggers fit into and can be impacted by the Order of Execution.
  • Describe the lifecycle of an Apex Transaction.
  • Describe the memory lifecycle for static variables.

M11 Testing Essentials

  • Describe Apex's testing framework.
  • Create test data.
  • Write and run an Apex test.

M12 Testing Strategies

  • Describe practices for writing code that is easy to maintain and extend.
  • Write triggers and classes that assume batches of data as input.
  • Write code that works efficiently with the database, both in querying and using DML.

M13 Strategies for Designing Efficient Apex Solutions

  • Determine your code coverage percentages.
  • Create tests using best practices.

M14 Trigger Design Strategies

  • List declarative mechanisms you can use to implement complex business logic, for what types of problems they are best used, and their limitations.
  • Describe ways in which you can use declarative functionality to improve your programmatic solutions.

M15 Creating Visualforce Pages

  • Create a Visualforce page.
  • Reference a standard controller.
  • Launch a Visualforce page using a custom button.
  • Display data from a record in a Visualforce page.

M16 Exploring the View and Controller Layers of Visualforce

  • Create a Visualforce page.
  • Display related data.
  • Invoke standard controller actions.

M17 Working with Custom Controllers and Controller Extensions

  • Create controller extensions.
  • Create a custom controller.
  • Work with properties.
  • Use PageReferences.
  • Invoke custom methods in Visualforce pages.

M18 Working with List Controllers and SOSL Queries

  • Use a standard list controller in a Visualforce page.
  • Create a SOSL query.
  • Create a custom list controller.

M19 Visualforce Development Considerations

  • Determine whether a declarative solution exists for your requirements.
  • Describe common governor limit issues and security concerns.
  • Describe Visualforce strategies.

M20 Testing Visualforce Controllers

  • Describe how a Visualforce controller interacts with the view.
  • Write tests for controller constructors.
  • Write tests action methods, getters, setters, and properties.

How do I enroll?

A comprehensive listing of ExitCertified courses can be found here. You can register directly for the required course/location when you select "register". If you have any questions or prefer to speak with an ExitCertified education consultant directly, please submit your query here. A representative will contact you shortly.

How do I pay for a class?

You can pay at the time of registration using credit card (Mastercard/Visa/American Express) cheque or PO.

When does class start/end?

Classes begin promptly at 9:00 am, and typically end at 5:00 pm.

Does the course schedule include a Lunchbreak?

Lunch is normally an hour long and begins at noon. Coffee, tea, hot chocolate and juice are available all day in the kitchen. Fruit, muffins and bagels are served each morning. There are numerous restaurants near each of our centers, and some popular ones are indicated on the Area Map in the Student Welcome Handbooks - these can be picked up in the lobby or requested from one of our ExitCertified staff.

How can someone reach me during class?

If someone should need to contact you while you are in class, please have them call the center telephone number and leave a message with the receptionist.

What languages are used to deliver training?

Most courses are conducted in English, unless otherwise specified. Some courses will have the word "FRENCH" marked in red beside the scheduled date(s) indicating the language of instruction.

What does GTR stand for?

GTR stands for Guaranteed to Run; if you see a course with this status, it means this event is confirmed to run. View our GTR page to see our full list of Guaranteed to Run courses.

Helpful and prompt with responses. I coordinated the scheduling of the class with them and, since day 1, all parties involved have been excellent! Knowledgeable, responsive, and accommodating.

I really enjoyed the course. It was well designed given that it was online. I would recommend that the higher level courses be taken on-site, but this course was very thorough for those looking to get started with an AWS Certification.

Sean Mohseni, was an excellent instructor able to work with different learner profiles, and his industry knowledge is very well versed, which delivered incredible opportunity for knowledge transfer!

The Labs shown with in the exit certified portal allowed the student to put their new knowledge into action. There was seemless movement between the virtual classroom to this lab space. Thank you to the architects and developers who made this reality.

Very educational and informative. Instructor was very Interactive so I had great learning. Presentation is very good. Venue is very convenient.

4 options available

  • Oct 12, 2020 Oct 16, 2020 (5 days)
    08:30 AM 05:00 PM EDT
  • Oct 26, 2020 Oct 30, 2020 (5 days)
    08:30 AM 05:00 PM PDT
  • Nov 9, 2020 Nov 13, 2020 (5 days)
    08:30 AM 05:00 PM EST
  • Nov 30, 2020 Dec 4, 2020 (5 days)
    08:30 AM 05:00 PM CST
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