Undergraduate student can get enrolled for more than one courses and a course is enrolled by at least one undergraduate student. Course has attributes course_id (identifier), credit, description and code. Courses can have one, none, or many prerequisites. Each course is prerequisite of zero, one or many courses. Department offers one or more courses and a course gets offered by
Undergraduate student can get enrolled for more than one courses and a course is enrolled by at least one undergraduate student. Course has attributes course_id (identifier), credit, description and code. Courses can have one, none, or many prerequisites. Each course is prerequisite of zero, one or many courses. Department offers one or more courses and a course gets offered by
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
![Undergraduate student can get enrolled for more than
one courses and a course is enrolled by at least one
undergraduate student. Course has attributes course_id
(identifier), credit, description and code. Courses can
have one, none, or many prerequisites. Each course is
prerequisite of zero, one or many courses. Department
offers one or more courses and a course gets offered by
one or many departments. Every instance of
department has unique dept_id and other attributes
are name and location that needs to be stored. Location
is composed of city, postal code and zip code.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe1fc0bd9-1aad-43c1-b41f-5470331ae741%2Fc259130d-71a9-4d4f-9cef-ca9d7153e5ab%2Fkzayy07_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Undergraduate student can get enrolled for more than
one courses and a course is enrolled by at least one
undergraduate student. Course has attributes course_id
(identifier), credit, description and code. Courses can
have one, none, or many prerequisites. Each course is
prerequisite of zero, one or many courses. Department
offers one or more courses and a course gets offered by
one or many departments. Every instance of
department has unique dept_id and other attributes
are name and location that needs to be stored. Location
is composed of city, postal code and zip code.
![Q.No. Create an Entity-Relationship Model to
represent the data requirements of the problem given
below. Specify the cardinalities of relationships and
all-important constraints. Also mention the
assumptions if you have made any.
A person can be an employee, alumnus or a student.
For person P_id (identifier), date of birth, gender and
contacts are stored. Person can have more than one
contact numbers and there are no other types of
person that exists. An instance of person can belong to
more than one type. Date hired and salary is the unique
attributes of employee. For alumnus degree is required
to be stored that comprises of year and designation.
Major department is the attribute of student. A student
can be a graduate student or an undergraduate student
but not both at the same time. No other type of
student exists. For graduate student test score is stored
and for undergraduate student class standing is stored.
Employee can be faculty, staff or others but not both at
the same time. For faculty rank is stored and for staff
position is stored. Undergraduate student can issue
books from the library. An undergraduate student can
issue at most one book and a book is issued by no
student or one student. Issue date, return date and fine
amount are stored when undergraduate student issues
a book. Book has attributes b_id, b_title and b_category
and b_id is the primary key for the book.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe1fc0bd9-1aad-43c1-b41f-5470331ae741%2Fc259130d-71a9-4d4f-9cef-ca9d7153e5ab%2Fggr0ckg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q.No. Create an Entity-Relationship Model to
represent the data requirements of the problem given
below. Specify the cardinalities of relationships and
all-important constraints. Also mention the
assumptions if you have made any.
A person can be an employee, alumnus or a student.
For person P_id (identifier), date of birth, gender and
contacts are stored. Person can have more than one
contact numbers and there are no other types of
person that exists. An instance of person can belong to
more than one type. Date hired and salary is the unique
attributes of employee. For alumnus degree is required
to be stored that comprises of year and designation.
Major department is the attribute of student. A student
can be a graduate student or an undergraduate student
but not both at the same time. No other type of
student exists. For graduate student test score is stored
and for undergraduate student class standing is stored.
Employee can be faculty, staff or others but not both at
the same time. For faculty rank is stored and for staff
position is stored. Undergraduate student can issue
books from the library. An undergraduate student can
issue at most one book and a book is issued by no
student or one student. Issue date, return date and fine
amount are stored when undergraduate student issues
a book. Book has attributes b_id, b_title and b_category
and b_id is the primary key for the book.
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