Data Structure

Supplier

Property	Info
id	Internal ID of the supplier.
domain	Key to domains.
name	Name of the supplier.
address	Location of supplier.
phone	Phone number of supplier.
contact	Other method of contact.

Person

Property	Info
id	Internal ID of the person.
name	Name of the person.
initial	Initials of the person.
partner	ID of spouse.

Domain

Domain of expense/receipts (e.g.: Medical Expense).

Property	Info
id	Internal ID of the domain.
name	Name of the domain.