Table: Staff_Rate_Table
Columns
Name	Type	Constraints	Description
staff_rate_table_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
staff_KEY	int	NOT NULL	Foreign key of the staff this Rate Table belongs to.
effective_date	smalldatetime	NOT NULL	The date this rate table becomes effective.
hourly_cost	decimal (9, 2)	NOT NULL	The cost per hour.
create_date_utc	datetime	NOT NULL

Primary key
Name	Columns		Description
PK_Staff_Rate_Table$staff_rate_table_KEY	staff_rate_table_KEY		CLUSTERED
Unique constraints
Name	Columns		Description
UK_Staff_Rate_Table$staff_KEY$effective_date	staff_KEY, effective_date

Foreign keys
Name	Columns	Referenced table	Description
FK_Staff_Rate_Table__Staff__staff_KEY	staff_KEY	Staff

Incoming foreign keys
Name	Columns	Referencing table	Description
FK_Staff_Billing_Rate__Staff_Rate_Table__staff_rate_table_KEY	staff_rate_table_KEY	Staff_Billing_Rate	on delete cascade;