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: PEARSON
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A library wants to build a simple online recommendation system for a summer reading programme. The system involves people reading and recommending books and authors. • Readers (people) have a screen name as well as a real name and contact information, including an unknown number of phone numbers they can be contacted at. • Books have a title, ISBN, genre and reading level. • An author has a name and nationality. They can write zero or more books. • Assume that Books are written by only one author. • The database records what books a reader has read. • Readers can “like” books. • Readers can “like” authors independent of the books the author has written. Create a hand-drawn, conceptual entity relationship diagram (like the last lab, except that you’re including attributes) describing this circumstance for a database designer.
Expert Solution
Check Mark
Step 1

a simple online recommendation system

it contains  actors which are given below

1) user 

2) book 

3) Author 

User(reader) like author and book 

And author write book 

 

 

 

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