Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Teacher = [ CourseN, Quarter , TeacherName] Course = [ CourseN , CourseName, Nunit) is LocationNTime = [ CourseN, Quarter, DayTime, RoomN]/ Examples of DayTime:

Teacher = [CourseN, Quarter, TeacherName]

Course = [CourseN, CourseName, Nunit) is

LocationNTime = [CourseN, Quarter, DayTime, RoomN]/ Examples of DayTime: M2:00AM,

W4:50PM, and T8:00PM. Note that DayTime is represented as a string.

Student = [studentName, CourseN, Quarter]

Express the following queries by SQL statements

List the name of every teacher who has taught the same course at least two times.

List the name of every teacher(distinct names) who has taught at least two different courses in the same or different quarters.

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Beginning ASP.NET 4.5 Databases

Authors: Sandeep Chanda, Damien Foggon

3rd Edition

1430243805, 978-1430243809

More Books

Students also viewed these Databases questions

Question

What is business intelligence? How is it used?

Answered: 1 week ago

Question

Define organisational structure

Answered: 1 week ago

Question

Define line and staff authority

Answered: 1 week ago

Question

Define the process of communication

Answered: 1 week ago

Question

Explain the importance of effective communication

Answered: 1 week ago

Question

* What is the importance of soil testing in civil engineering?

Answered: 1 week ago

Question

Question Can any type of stock or securities be used in an ESOP?

Answered: 1 week ago

Question

Question Can a self-employed person adopt a money purchase plan?

Answered: 1 week ago