Final answer:
In a hierarchical model, related records are tracked using parent-child relationships. This allows you to navigate through the hierarchy and determine the relationships between records.
Step-by-step explanation:
In a hierarchical model, related records are tracked using parent-child relationships. Each record in the hierarchy has a unique identifier and a reference to its parent record. To track related records, you can navigate through the hierarchy by following the parent-child relationships.
For example, consider a company's organizational hierarchy. Each employee record has a unique employee ID and a reference to their manager's employee ID. By starting from a specific employee, you can track their immediate subordinates by looking for records with that employee as the parent.
This method allows you to retrieve records at different levels of the hierarchy and determine their relationships. By following the parent-child relationships, you can easily track related records in a hierarchical model.