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Consider the following Books database which is used to keep track of books and their readers. Assume that the database is composed of the following three relations where the key attributes are underlined. PERSON Gender READS PID 111 111 222 333 444 BOOK Title BID PYear Price 2016 PID Name BooklD StartDate 2/4/2015 2/6/2015 8/4/2017 2/6/2015 2/4/1995 2/8/1995 1 Internet 50 111 Sami Khawla Rawan Zainab Khamis 3 programming Database System Programmin g using C++ 222 333 444 555 2 2013 45 4 F 3 2011 25 2 M 444 1 4 2009 Operating Systems Oracle DBMS 35 2017 50 • Write a SQL query to display the information including title, name (person name), and PID of all the books which have been read (StartDate) in the year 2015, and the price of these books is less than 50. Convert the generated SQL query into a Relational algebra query. Then, draw the optimized query tree (fifth step of query optimization). Note: You can draw a tree on a paper, scan, and upload in the Moodle OR you can describe tree stepwise like English sentences starting from leaf node (first step) to upwards

Consider the following Books database which is used to keep track of books and their readers. Assume that the database is composed of the following three relations where the key attributes are underlined. PERSON Gender READS PID 111 111 222 333 444 BOOK Title BID PYear Price 2016 PID Name BooklD StartDate 2/4/2015 2/6/2015 8/4/2017 2/6/2015 2/4/1995 2/8/1995 1 Internet 50 111 Sami Khawla Rawan Zainab Khamis 3 programming Database System Programmin g using C++ 222 333 444 555 2 2013 45 4 F 3 2011 25 2 M 444 1 4 2009 Operating Systems Oracle DBMS 35 2017 50 • Write a SQL query to display the information including title, name (person name), and PID of all the books which have been read (StartDate) in the year 2015, and the price of these books is less than 50. Convert the generated SQL query into a Relational algebra query. Then, draw the optimized query tree (fifth step of query optimization). Note: You can draw a tree on a paper, scan, and upload in the Moodle OR you can describe tree stepwise like English sentences starting from leaf node (first step) to upwards

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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Consider the following Books database which is used to keep track of books and their readers. Assume that the database is composed of the following three relations where the key attributes are underlined. BOOK Title PERSON READS PID 111 111 222 333 444 BID PID 111 Gender BookID StartDate 2/4/2015 PYear Price Name 2 Internet programming Database System Programmin g using C++ 1 2016 50 Sami M 3 2/6/2015 8/4/2017 Khawla Rawan Zainab Khamis 222 2 2013 45 4 333 444 2 2/6/2015 3 2011 25 555 M 2 2/4/1995 444 1 2/8/1995 Operating Systems Oracle DBMS 4 2009 35 5 2017 50 • Write a SQL query to display the information including title, name (person name), and PID of all the books which have been read (StartDate) in the year 2015, and the price of these books is less than 50. Convert the generated SQL query into a Relational algebra query. Then, draw the optimized query tree (fifth step of query optimization). Note: You can draw a tree on a paper, scan, and upload in the Moodle OR you can describe tree stepwise like English sentences starting from leaf node (first step) to upwards
Transcribed Image Text:Consider the following Books database which is used to keep track of books and their readers. Assume that the database is composed of the following three relations where the key attributes are underlined. BOOK Title PERSON READS PID 111 111 222 333 444 BID PID 111 Gender BookID StartDate 2/4/2015 PYear Price Name 2 Internet programming Database System Programmin g using C++ 1 2016 50 Sami M 3 2/6/2015 8/4/2017 Khawla Rawan Zainab Khamis 222 2 2013 45 4 333 444 2 2/6/2015 3 2011 25 555 M 2 2/4/1995 444 1 2/8/1995 Operating Systems Oracle DBMS 4 2009 35 5 2017 50 • Write a SQL query to display the information including title, name (person name), and PID of all the books which have been read (StartDate) in the year 2015, and the price of these books is less than 50. Convert the generated SQL query into a Relational algebra query. Then, draw the optimized query tree (fifth step of query optimization). Note: You can draw a tree on a paper, scan, and upload in the Moodle OR you can describe tree stepwise like English sentences starting from leaf node (first step) to upwards
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