Table: Contact_Email
Columns
Name	Type	Constraints	Description
contact_email_KEY	int	NOT NULL	AUTO-INCREMENT: Database assigned primary key for this table.
update__staff_KEY	int	NOT NULL
update_date_utc	datetime	NOT NULL
contact_KEY	int	NOT NULL	Key to a Contact record.
contact_email_type_KEY	int	NOT NULL	Key to a Contact Email Type record.
email	nvarchar (320)	NOT NULL	E-mail address.
create_date_utc	datetime	NOT NULL
create__changeset_KEY	int	NOT NULL
update__changeset_KEY	int	NOT NULL
display_as	nvarchar (320)	NOT NULL

Primary key
Name	Columns		Description
PK_Contact_Email$contact_email_KEY	contact_email_KEY		CLUSTERED
Unique constraints
Name	Columns		Description
UK_Contact_Email$contact_KEY$contact_email_type_KEY	contact_KEY, contact_email_type_KEY		Each Contact can only have one of each type of e-mail address.
Indexes
Name	Columns		Description
IX_Contact_Email$contact_email_type_KEY	contact_email_type_KEY		Index supports foreign key FK_Contact_Email__Contact_Email_Type__contact_email_type_KEY
IX_Contact_Email$email@contact_KEY	email, contact_KEY		This index supports looking up contacts based on email address, mainly for email indexing.

Foreign keys
Name	Columns	Referenced table	Description
FK_Contact_Email__Contact__contact_KEY	contact_KEY	Contact

Incoming foreign keys
Name	Columns	Referencing table	Description
FK_Monitored_Event_Action__Contact_Email__contact_email_KEY	contact_email_KEY	Monitored_Event_Action
FK_Recorded_Event_Notification__Contact_Email__contact_email_KEY	contact_email_KEY	Recorded_Event_Notification	on delete set null;