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What is the main role of an ER diagram in data modelling? How many courses each student can have? What is the relationship degree between the entities? Is there an associative entity, if yes can you name it? What is uniquely identifying the student entity table (Primary Key)?

What is the main role of an ER diagram in data modelling? How many courses each student can have? What is the relationship degree between the entities? Is there an associative entity, if yes can you name it? What is uniquely identifying the student entity table (Primary Key)?

Computer Networking: A Top-Down Approach (7th Edition)
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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  1. What is the main role of an ER diagram in data modelling?
  2. How many courses each student can have?
  3. What is the relationship degree between the entities?
  4. Is there an associative entity, if yes can you name it?
  5. What is uniquely identifying the student entity table (Primary Key)?
Course Offerings Time : datetime SectionNum : int Roomld : int Student Student_Course SID : int Name : varchar(255) Program : varchar(255) StudentSID : int CourseNo : int Marks : int Semester : char(2) Year : int StudentSID : int Examination ID : int Student_Course StudentSID : int Name : varchar(255) Place : varchar(255) Column
Transcribed Image Text:Course Offerings Time : datetime SectionNum : int Roomld : int Student Student_Course SID : int Name : varchar(255) Program : varchar(255) StudentSID : int CourseNo : int Marks : int Semester : char(2) Year : int StudentSID : int Examination ID : int Student_Course StudentSID : int Name : varchar(255) Place : varchar(255) Column
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