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Question#1: Draw query tree for following relational queries. Also write SQL query for each relational query given. σsubject = "database"(Books) ∏ author (Books) ∪ ∏ author (Articles) σauthor = 'tutorialspoint'(Books Χ Articles)

Question#1: Draw query tree for following relational queries. Also write SQL query for each relational query given. σsubject = "database"(Books) ∏ author (Books) ∪ ∏ author (Articles) σauthor = 'tutorialspoint'(Books Χ Articles)

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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Question#1: Draw query tree for following relational queries. Also write SQL query for each relational query given.

  1. σsubject = "database"(Books)
  2. ∏ author (Books) ∪ ∏ author (Articles)
  3. σauthor = 'tutorialspoint'(Books Χ Articles)
  4. (πsName,p.pName,pa.Grade (σs.Age>25^pa.Grade=’A’ ((Student ⋈ Project_Allocation) ⋈ Project)))
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