For each of the following enterprise constraints decide whether

itisalreadyexpressedintheEnhancedEntity-Relationshipmodel (EER) of Table 2 on the next page

it is not already expressed in the EER of Table 2 on the next page but could be expressed using only features of an EER model.

cannot be expressed in the EER of Table 2 on the next page using only features of an EER model.

In each case explain your answer briefly but clearly.

(a) A table order originates from exactly one table of one restaurant.

(b) Two table orders dispatched at (roughly) the same time must originate from different tables.

Receives_by_phone Restaurant hone_line phone num Contains dateTi me billingNo total Order Originates from Table optional.orh number PhoneOrder TableOrder street wai ter deliveryAddress postcode city Receives_by_phone Restaurant hone_line phone num Contains dateTi me billingNo total Order Originates from Table optional.orh number PhoneOrder TableOrder street wai ter deliveryAddress postcode city