Answered step by step
Verified Expert Solution
Question
1 Approved Answer
In each case explain your answer briefly but clearly. Also decide whether question 1 and question 2: -is already expressed in the Enhanced Entity-Relationship model
In each case explain your answer briefly but clearly.
Also decide whether question 1 and question 2:
-is already expressed in the Enhanced Entity-Relationship model (EER) below
- is not already expressed in the EER model model below but could be expressed using only features of an EER model.
-cannot be expressed in the EER model using only features of an EER model.
Question 1) A table order originates from exactly one table of one restaurant.
Question 2) 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
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started