address table contains address
information for customers, staff, and stores.
address_id: A surrogate primary key
used to uniquely identify each address in the table.
address: The first line of an address.
address2: An optional second line of an
district: The region of an address,
this may be a state, province, prefecture, etc.
city_id: A foreign key pointing to the
postal_code: The postal code or ZIP
code of the address (where applicable).
phone: The telephone number for the
last_update: The time that the row was
created or most recently updated.