Notes
In Salesforce, a self-relationship is a relationship between records within the same object. This allows a record to have a relationship with another record of the same object.
Self-relationships are useful when you need to model hierarchical data, such as a company's organizational structure or a family tree. For example, you might have a custom object called "Employee" and want to create a relationship between employees and their managers. You can do this by creating a self-relationship between the "Employee" object and linking an employee record to the record of their manager.
To create a self-relationship in Salesforce, you need to create a lookup field on the object and set the related object to the same object. This creates a reference to another record within the same object. Once the field has been created, you can use it to create a hierarchy of records.
Self-relationships can be used to create complex data models and enable you to organize your data in a way that is meaningful to your organization. They are useful in situations where you need to represent hierarchical data or relationships between records of the same object.