What does a composite relationship in ArcGIS Pro do?

A composite relationship in ArcGIS Pro is designed to maintain a strong dependency between parent and child records in a data model. This type of relationship ensures that when a parent record is deleted, all associated child records are also automatically deleted. This is useful for maintaining data integrity, especially in scenarios where child records do not have any meaningful existence without their parent record.

In contrast, other types of relationships may allow child records to exist independently of their parent or provide more flexibility in how connections between records are managed. This automatic cascading delete feature that composite relationships provide is crucial in scenarios where it is important to maintain a clean and consistent dataset without orphaned child records.