Question
Consider the following schema: Publisher (name, phone, address), PK: name. Book (ISBN, title, year, published_by, previous_edition), PK: ISBN, FK: published_by refs Publisher, previous_edition refs Book.
Consider the following schema:
Publisher (name, phone, address), PK: name.
Book (ISBN, title, year, published_by, previous_edition), PK: ISBN, FK: published_by refs Publisher, previous_edition refs Book.
Author (SSN, first_name, last_name, address, income), PK: SSN.
Write(aSSN, bISBN), PK: (aSSN, bISBN), FK: aSSN refs Author, bISBN refs Book.
Author_Editor(aeSSN, works_for), PK: aeSSN, FK: aeSSN refs Author, works_for refs Publisher.
Give relational algebraic expressions or SQL statements for the following plain English
1. Provide the first name and last name of author-editors and the name and phone of the publishers that they work for. (15 pts)
2. Provide the ISBN of those books whose authors include both Andy Smith and Mary Doe. (15 pts)
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