Identify the primary and foreign keys for each relation. FirstNameTelephoneNameCPREmailLastNameOwnerPasswordCustomerNamePhoneMakeNameCPRJobIDTimeEmployeeOrderOnTimeDateCommentContainDishMNamePriceIntgredients TelephoneNameTypeameCPROwnerOwned byResturantHasNo.NameCPRTelephoneJobCityNo. of employeeIDMEmployeeHasBranchManaged byN.DishMOfferPriceIntgredients

For Customer Entity The primary key is "ID" And for one customer there can be multiple orders and so…

Answered: Identify the primary and foreign keys…

Engineering

Computer Science

Identify the primary and foreign keys for each relation.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.

Question

Identify the primary and foreign keys for each relation.

FirstName
Telephone
Name
CPR
Email
LastName
Owner
Password
Customer
Name
Phone
Make
Name
CPR
Job
ID
Time
Employee
Order
OnTime
Date
Comment
Contain
Dish
M
Name
Price
Intgredients

Telephone
Name
Type
ame
CPR
Owner
Owned by
Resturant
Has
No.
Name
CPR
Telephone
Job
City
No. of employee
ID
M
Employee
Has
Branch
Managed by
N.
Dish
M
Offer
Price
Intgredients

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