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Apex Triggers in Salesforce: A Complete Guide

Salesforce is a robust cloud-based CRM platform that provides businesses with tools to manage their sales, marketing, and customer service. Apex Triggers is one of Salesforce's most powerful features, allowing developers to automate business processes by writing custom code.

This blog post will deeply dive into Apex Triggers in Salesforce, their benefits, and how they work.

What is an Apex Trigger?

An Apex Trigger is a code that executes before or after a record is inserted, updated, or deleted in Salesforce. The trigger code can perform custom actions, such as updating related records, sending emails, or creating new records.

Triggers are written in Apex, a programming language used by Salesforce, and they are associated with a specific object, such as an account or opportunity. You can configure a trigger to execute when a particular event occurs, such as when a record is created or updated.

What is the difference between Apex and trigger?

Apex and Trigger are not comparable as they serve different purposes in the Salesforce platform.


Apex is a proprietary programming language developed by Salesforce for building custom applications and automating business processes in the Salesforce platform. It is used to extend the functionality of Salesforce, create custom integrations, and develop a custom logic to enhance the standard functionality of Salesforce. Apex is similar to other programming languages like Java and C#, and developers use it to write code that can interact with the Salesforce database.


On the other hand, a trigger is a type of automation that executes code before or after specific events occur in the Salesforce platform, such as creating, updating, or deleting a record. A trigger is written in Apex and associated with a particular object, enabling you to perform custom operations on data in response to data changes. In other words, a trigger is a type of Apex code designed to respond to events that occur in Salesforce.

In summary, Apex is a programming language that allows developers to write custom code to extend the functionality of Salesforce. At the same time, a trigger is a type of Apex code that executes in response to specific events in Salesforce. Both are essential tools for customizing Salesforce, and they often work together to automate business processes and perform customs operations on data.

What are the Types of APEX Triggers?

In Salesforce, Apex Triggers are used to execute custom logic on the occurrence of specific events on records in the database. There are two types of Apex Triggers: Before Triggers and After Triggers.

1. Before Triggers:

Before Triggers are used to act before a record is saved to the database. It allows you to

modify the data before it is kept in the database. For example, if you have a custom object with a field that should always be a positive integer, you can use a before Trigger to ensure that the value entered is more significant than zero.

2. After Triggers:

Triggers act after a record is saved to the database. It allows you to perform additional operations after keeping the record in the database. After triggers can be used to update related records or perform calculations based on the new data added to the record. For example, if you have a custom object that tracks customer orders, you can use an after Trigger to update the total amount spent by the customer after a new order is added.

Before and After Triggers can update records on the same or related object. You can use them to enforce business rules or perform custom calculations that are impossible using standard Salesforce functionality.

In addition to Before and After Triggers, there are also other types of Apex Triggers, such as:

  1. Insert Triggers: These triggers are fired when a new record is inserted into the database.

  2. Update Triggers: These triggers are fired when an existing record is updated.

  3. Delete Triggers: These triggers are fired when a record is deleted from the database.

  4. Undelete Triggers: These triggers are fired when a record is undeleted.

Apex Triggers are a powerful feature of Salesforce that allows you to extend the platform's functionality and automate complex business processes. Using Apex Triggers, you can ensure that your data is always accurate and up-to-date and that your business rules are enforced consistently across your organization.

Benefits of Apex Triggers

Apex Triggers offer several benefits to Salesforce developers and administrators:

  1. Automate Business Processes: Triggers allow developers to automate complex business processes that involve multiple objects and actions. It helps organizations to streamline their operations and increase efficiency.

  2. Improve Data Quality: Triggers can be used to enforce business rules and data validation to ensure that the data entered in Salesforce is accurate and consistent. Additionally, it helps to improve data quality and avoid errors.

  3. Customizable: Triggers are highly customizable, and developers can write code to perform custom actions specific to their business needs. Moreover, it allows organizations to automate their unique business processes.

  4. Scalability: Triggers can handle large volumes of data and scale to meet the needs of growing businesses. It makes them a powerful tool for organizations looking to expand their operations.

How do Apex Triggers Work?

Apex Triggers work by executing a block of code when a specific event occurs in Salesforce. You can use code to perform custom actions, such as updating related records or creating new ones.

Here are the basic steps for creating and using an Apex Trigger in Salesforce:

  1. Write the Trigger Code: The trigger code is in Apex and associated with a specific object in Salesforce. You can write code to execute when a particular event occurs, such as when a record is inserted, updated, or deleted.

  2. Configure the Trigger: The Trigger is configured to execute when the event occurs using the Salesforce user interface. Depending on the business's needs, you can configure code to run before or after the event.

  3. Test the Trigger: The trigger code is tested to ensure it executes correctly and performs the desired actions. Testing can be done using the Salesforce user interface or an automated tool.

  4. Deploy the Trigger: Once the trigger code has been tested and verified, it can be deployed to the Salesforce production environment.


Apex Triggers are a powerful tool for Salesforce developers and administrators to automate business processes, improve data quality, and increase efficiency. With their customizable and scalable nature, triggers can automate complex business processes and handle large volumes of data.

When creating triggers, it is important to follow best practices, such as testing the code thoroughly and keeping it clean and organized. With proper use and implementation, Apex Triggers can significantly benefit organizations using Salesforce.

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