Table: Schedule_Item_Pending_Reminder
Reminders that have not yet been recorded, indexed by [reminder_date] so that lookups are fast. When a reminder is recorded this record is deleted.
Columns
Name	Type	Constraints	Description
schedule_item_KEY	int	NOT NULL	The [Schedule_Item_Reminder] that owns this link.
reminder_date_utc	datetime	NOT NULL	The date the reminder is to be recorded. This value must match the value in [Schedule_Item_Reminder].

Primary key
Name	Columns		Description
PK_Schedule_Item_Pending_Reminder$schedule_item_KEY	schedule_item_KEY		CLUSTERED
Indexes
Name	Columns		Description
IX_Schedule_Item_Pending_Reminder$reminder_date_utc	reminder_date_utc		Required for looking up what next reminder to show next quickly.

Foreign keys
Name	Columns	Referenced table	Description
FK_Schedule_Item_Pending_Reminder__Schedule_Item__schedule_item_KEY	schedule_item_KEY	Schedule_Item	on delete cascade;