Navigating through parent-child relationships in SOQL refers to the ability to traverse and query data across related objects in Salesforce using SOQL. Parent-child relationships exist when one object is related to another object, such as a master-detail or lookup relationship. For example, if you have a parent object called “Account” and a child object called […]

Step: 4 After entering the query, click the “Execute” button (it looks like a play button) to run the query. Step 5: The results of your query will be displayed in the Query Editor’s Results tab. In this example: SELECT Id, Name, Owner.Name specifies the fields to be retrieved. FROM Account specifies the object from […]

5.5 NullPointerException In Apex, a NullPointerException occurs when you attempt to access or manipulate an object that is null. In other words, you are trying to perform an operation on an object reference that doesn’t point to any instance of an object. This can lead to runtime errors and unexpected behavior in your Apex code. […]

5.4 Database.Batchable Interface Batchable Apex in Salesforce is an approach to process large volumes of data in smaller, manageable chunks or batches. It enables you to break down the data processing into multiple iterations, each handling a subset of the total data. This approach helps you stay within Salesforce’s governor limits and ensures efficient processing […]

Override Method Apex also supports overriding from method, which allows a child class to provide a different implementation for a method that is already implemented in its parent class. When a child class overrides a method, it provides its own implementation of the method, which is used instead of the implementation in the parent class […]

Abstract Methods –– An abstract method is a method declared in a class but does not have an implementation in that class. –– Subclasses must provide implementations for all abstract methods. –– An abstract class can also contain non-abstract methods. In the example below, let’s consider an abstract class named Item that represents a generic […]

Virtual Methods In Apex, a virtual method is a method declared in a base class that can be overridden in its subclasses. This allows you to provide different implementations of the method in different subclasses. This concept is useful when you want to define a common behavior in a base class, but allow its subclasses […]

An interface in Apex specifies a set of methods that implementing classes must provide. Interfaces enable a form of multiple inheritance, allowing a class to implement multiple interfaces. It is similar to a class, but it does not have any of its methods implemented. Instead, each method’s body is empty, and only the method signatures […]

Private class is a class that can only be accessed within the same Apex class or trigger in which it is defined. It cannot be accessed outside of the class or trigger, including within other classes or triggers in the same Salesforce organization. Private classes are primarily used for encapsulating functionality that is specific to […]

Global keyword is used in Apex to define a class or method as accessible outside of the package. A Global class can be accessed by other classes in different namespaces or by external systems, such as web services. The Global class is commonly used in the following scenarios: •\ Creating Web Services: Apex classes with […]