Consider the following database: Students name rim sara milad tarek lastname age 19 18 21 18 Select ismail kamel ghantous dib ID 123 134 1345 12345 ) from Roster ID 123 134 1345 12345 ME major EE EE CCE Write a query that finds the number of available majors. The output should be 3 for the above instance. absence 7 2 4

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Consider the following database:
Students
name lastname age
rim
19
18
21
18
sara
milad
tarek
ismail
kamel
ghantous
dib
Select
123
134
1345
12345
Roster
ID
major
123
EE
134
EE
1345 CCE
12345 ME
absence
Write a query that finds the number of available majors. The output should be 3 for the above instance.
) from
4
7
2
4
Transcribed Image Text:Consider the following database: Students name lastname age rim 19 18 21 18 sara milad tarek ismail kamel ghantous dib Select 123 134 1345 12345 Roster ID major 123 EE 134 EE 1345 CCE 12345 ME absence Write a query that finds the number of available majors. The output should be 3 for the above instance. ) from 4 7 2 4
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