Answered: a) Consider the following EER diagram.…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

a) Consider the following EER diagram. Map it to the relational model. Specify the relational schema in DBDL notation.

b) Convert the following relational schema to BCNF (FD1, FD2 and FD3 are functional dependencies. CourseOffering(coId, courseId, semesterId, year, campus, courseName) Primary key (coId) Alternate Key (courseId, semesterId, year, campus) FD1: coId courseId, semesterId,

Full-Time
Staff
staffNo{PK}
salary
name
{mandatory, OR}
fName
IName
contactNo
email
0..* worksFor
Part-Time
casual Rate
Department
1..1 deptNo{PK}
deptName
deptPhone

Expert Solution

Step 1: Define as relational schema definition

A relational schema is a blueprint utilized in database design to represent the records to be entered into the database and describe how that information is structured in tables (known as members of the family in relational schemas).

Relation names: The names of the tables within the database.
Attributes: The columns in each table.
Domain names: The facts and varieties of the attributes.
Primary keys: The columns that uniquely identify every row in a table.
Foreign keys: The columns that seek advice from the primary keys of other tables.