Relationships in the Logical Model › Non-Identifying Relationships in the Logical Model

Non-Identifying Relationships in the Logical Model

A non-identifying relationship is a relationship between two entities in which an instance of the child entity is not identified through its association with a parent entity, which means the child entity is not dependent on the parent entity for its identity and can exist without it. In a non-identifying relationship, one instance of the parent entity is related to multiple instances of the child.

You can create the following types of non-identifying relationships:

• Optional non-identifying relationship
• Mandatory non-identifying relationship

You can set the default non-identifying null option in the Model Editor.

You can also use non-identifying relationships to create recursive relationships.

You can create a non-identifying relationship when you add a relationship using the Relationships editor, on the diagram window, or using the Model Explorer.

Note: Primary key attributes are automatically migrated from a parent entity to a child entity, so you do not need to enter any foreign keys in the child.

More information:

Optional Non-Identifying Relationships in the Logical Model

Mandatory Non-Identifying Relationships in the Logical Model

Set the Default Null Option for a Non-Identifying Relationship

Add a Non-Identifying Relationship

Recursive Relationships