Table: dbo.Additional_Contact
Columns
Name | Type | Constraints | Description
additional_contact_KEY | int (4) | NOT NULL | Database assigned primary key for this table.
parent__contact_KEY | int (4) | NOT NULL | Key to the parent contact record.
child__contact_KEY | int (4) | NOT NULL | Key to the child contact record.
social_security_number | nvarchar (22) | NOT NULL | Social security number for contact such as a household employer
birth_date | smalldatetime (4) |  | The birth date of the clients additional contact.

Primary key
Name | Columns | Description
PK_Additional_Contact | additional_contact_KEY |
Unique constraints
Name | Columns | Description
UK_Additional_Contact$child__contact_KEY | child__contact_KEY |

Foreign keys
Name | Columns | Referenced table | Description
FK_Additional_Contact__Contact__child__contact_KEY | child__contact_KEY | Contact (contact_KEY) |
FK_Additional_Contact__Contact__parent__contact_KEY | parent__contact_KEY | Contact (contact_KEY) |

Incoming foreign keys
Name | Columns | Referencing table | Description
FK_Additional_Contact_Role__Additional_Contact__additional_contact_KEY | additional_contact_KEY | Additional_Contact_Role |