Assume the following below given tables and answer the questions.
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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![Assume the following below given tables and answer the questions.
Teacher (teacher_ID, teacher_name, teacher_dept, teacher_salary)
Teaches (teacher_ID, course_id, sec_id, semester, year)
Course (course_id, course_title, dept_name, course_credits)
a) Query 1: write a relational algebra query to find the names of all teachers in the IT
department, along with the course titles of the courses that they teach.
b) Query 2: write a relational algebra query to find the names of all instructors in the
IT department who have taught a course in 2020, along with the titles of the
courses that they taught.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7084bf20-b681-4699-8d86-339177a76839%2F4007cec9-c126-4242-9d9d-d9f60d2fb5af%2F0jysvhc_processed.png&w=3840&q=75)
Transcribed Image Text:Assume the following below given tables and answer the questions.
Teacher (teacher_ID, teacher_name, teacher_dept, teacher_salary)
Teaches (teacher_ID, course_id, sec_id, semester, year)
Course (course_id, course_title, dept_name, course_credits)
a) Query 1: write a relational algebra query to find the names of all teachers in the IT
department, along with the course titles of the courses that they teach.
b) Query 2: write a relational algebra query to find the names of all instructors in the
IT department who have taught a course in 2020, along with the titles of the
courses that they taught.
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