Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Chapter 3, Problem 11E

Explanation of Solution

a.

DISTINCT:

“DISTINCT” keyword is used to avoid redundant data (removing duplicate values) from a column. The syntax for “DISTINCT” keyword is as follows:

SELECT DISTINCT column_Name FROM table_Name;

Query:

Select distinct name from student natural join takes natural join course where course...

Explanation of Solution

b.

Query:

Select ID, name from student natural join takes except

Select ID, name from student natural join takes where year<2017

Explanation:

...

Explanation of Solution

c.

Query:

Select dept_name, max(salary) from instructor group by dept_name

Explanat...

Explanation of Solution

d.

Query:

Select min(max_sal) from (select dept_name, max(salary) as max_sal from instructor group by dept_name)

Students have asked these similar questions
8.4 Self-Bias Configuration 20. Determine Zi. Zo. and A,, for the network of Fig. 8.73 if gf, = 3000 μS and gos = 50 μs. 21. Determine Z, Zo, and A, for the network of Fig. 8.73 if the 20-uF capacitor is removed and the parameters of the network are the same as in Problem 20. Compare results with those of Problem 20. +12 V 3.3 ΚΩ HE C₂ Vo Z Zo C₁ 10 ΜΩ Z₁ 1.1 ΚΩ Cs 20 µF FIG. 8.73 Problems 20, 21, 22, and 59.
21. Determine Zi, Zo, and A, for the network of Fig. 8.73 if the 20-μF capacitor is removed and the parameters of the network are the same as in Problem 20. Compare results with those of Problem 20. +12 V 3.3 ΚΩ +6 C₂ C₁ Z₁ 10 ΜΩ 1.1 ΚΩ Cs 20 μF FIG. 8.73 Zo
Ninth Edition Determine Zi, Zo and Av 20 V Zi + 1 ΜΩ 2 ΚΩ HH Z IDSS= 6MA Vp=-6V Yos = 40μS 20 and 47
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