Table: Benefit_Factor
Columns
Name	Type	Constraints	Description
benefit_factor_KEY	int	NOT NULL	Assigned by COMMON_dp_Allocate_Unique_Identifiers. Primary key for this table, same value as activity_KEY.
update__staff_KEY	int	NOT NULL
update_date_utc	datetime	NOT NULL
create_date_utc	datetime	NOT NULL
benefit_KEY	int	NOT NULL	Key to a Benefit that the benefit factor is for.
benefit_entry_type_KEY	int	NOT NULL	Key to a benefit entry type that this benefit factor is.
factor	decimal (9, 2)	NOT NULL	The allowance benefit factor.
to_month	int	NOT NULL	The end month of this benefit factor.
to_day	int	NOT NULL	The end day of this benefit factor.
sortable_to_date	smalldatetime	NOT NULL	The [to_month] and [to_day] columns are combined into the [sortable_to_date] column for sorting and comparison. The year 2000 was selected as the year to base this date on because it is a leap year and it is a nice even number.

Primary key
Name	Columns		Description
PK_Benefit_Factor$benefit_factor_KEY	benefit_factor_KEY		CLUSTERED
Unique constraints
Name	Columns		Description
UK_Benefit_Factor$benefit_KEY$benefit_entry_type_KEY$to_month$to_day	benefit_KEY, benefit_entry_type_KEY, to_month, to_day
Indexes
Name	Columns		Description
IX_Benefit_Factor$benefit_entry_type_KEY	benefit_entry_type_KEY		Index supports foreign key FK_Benefit_Factor__Benefit_Entry_Type__benefit_entry_type_KEY
IX_Benefit_Factor$sortable_to_date	sortable_to_date

Foreign keys
Name	Columns	Referenced table	Description
FK_Benefit_Factor__Benefit__benefit_KEY	benefit_KEY	Benefit	on delete cascade;