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1. Draw an ERD for the following situation. Be sure to show: entity information, attributes, identifier(s), relationships and relationship names, and cardinality Each publisher has a unique name; a mailing address and telephone number are also kept on each publisher. A publisher may publish one or more books; a book is published by exactly one publisher. A book is identified by its ISBN, and other attributes are title, price, and number of pages. Each book is written by one or more authors; an author may write one or more books, potentially for different publishers. Each author is uniquely described by an author ID, and we know each authors name and address. As you develop the ERD for this problem, follow good data naming guidelines.
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Answer #1

Assumption: There are many authors under one publisher.

The Enities are Written in Blue Filled Boxed

The Attributes are written in White Boxes and the Identifier Attribute has been underlined

The Relationship Name is written in Red font

The Relationship is written in Blue Italic font

The cardinality is drawn with blue thin line.

Book Publisher ISBN Book Title Publisher_Name Publisher_MailingAddress Publisher_TelphoneNo 1:M PublishBook_Price Book_Pages

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