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Draw an ER model; An author writed a book . Every book has a title, ISBN, year, and price. each book may be authored by one or more author and each author may write one , or more than one book. For authors the database keeps the name, address and URL of their homepage. Each book has a publisher. The database keeps the name, address , and phone number adn the URL of their wedbsite. Each publishers publishes one or more books and each book is published by exactly one publisher. The warehouse stocks several books. Each warehouse has  a code, address and phone number. The database records the number of copies stocked at various warehouse.

Draw an ER model; An author writed a book . Every book has a title, ISBN, year, and price. each book may be authored by one or more author and each author may write one , or more than one book. For authors the database keeps the name, address and URL of their homepage. Each book has a publisher. The database keeps the name, address , and phone number adn the URL of their wedbsite. Each publishers publishes one or more books and each book is published by exactly one publisher. The warehouse stocks several books. Each warehouse has  a code, address and phone number. The database records the number of copies stocked at various warehouse.

Database System Concepts
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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Draw an ER model;

An author writed a book . Every book has a title, ISBN, year, and price. each book may be authored by one or more author and each author may write one , or more than one book. For authors the database keeps the name, address and URL of their homepage. Each book has a publisher. The database keeps the name, address , and phone number adn the URL of their wedbsite. Each publishers publishes one or more books and each book is published by exactly one publisher. The warehouse stocks several books. Each warehouse has  a code, address and phone number. The database records the number of copies stocked at various warehouse. 

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