“SELECT” command: The “SELECT” command is used to retrieve data in a database . Syntax for selecting values from the table is as follows: SELECT STUDENT_ID FROM STUDENT; The given query is used to display each student ID from “STUDENT” table. “AVG” function: It is the one function of aggregate function. The “AVG” function is used to compute the average value in a column. Example: The example for “AVG” function is given below: SELECT AVG(MARK_CREDIT) FROM STUDENT; The above query is used to display the average of mark credit from “STUDENT” table using “AVG” function. “GROUP BY” Clause: User can group the data using “GROUP BY” clause. This clause allows the user to group data on a specific column and then computes statistics when user preferred. Example: The example for “GROUP BY” clause is given below: SELECT CUSTOMER_NAME, SUM(AMOUNT) FROM CUSTOMERS GROUP BY CUSTOMER_NAME; The above query is used to list the customer name and the sum of amount using “GROUP BY” clause.

Question

4. |z + 5 - 5i| = 7

Answer 1

Question

Chapter 4, Problem 14CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“AVG” function:

It is the one function of aggregate function.

The “AVG” function is used to compute the average value in a column.

Example:

The example for “AVG” function is given below:

SELECT AVG(MARK_CREDIT) FROM STUDENT;

The above query is used to display the average of mark credit from “STUDENT” table using “AVG” function.

“GROUP BY” Clause:

User can group the data using “GROUP BY” clause.

This clause allows the user to group data on a specific column and then computes statistics when user preferred.

Example:

The example for “GROUP BY” clause is given below:

SELECT CUSTOMER_NAME, SUM(AMOUNT) FROM CUSTOMERS GROUP BY CUSTOMER_NAME;

The above query is used to list the customer name and the sum of amount using “GROUP BY” clause.

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4. |z + 5 - 5i| = 7

14. dz, C: |z❘ C: |z❘ = 0.6 ze² - 2iz H

Answer 2

Question

Chapter 4, Problem 14CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“AVG” function:

It is the one function of aggregate function.

The “AVG” function is used to compute the average value in a column.

Example:

The example for “AVG” function is given below:

SELECT AVG(MARK_CREDIT) FROM STUDENT;

The above query is used to display the average of mark credit from “STUDENT” table using “AVG” function.

“GROUP BY” Clause:

User can group the data using “GROUP BY” clause.

This clause allows the user to group data on a specific column and then computes statistics when user preferred.

Example:

The example for “GROUP BY” clause is given below:

SELECT CUSTOMER_NAME, SUM(AMOUNT) FROM CUSTOMERS GROUP BY CUSTOMER_NAME;

The above query is used to list the customer name and the sum of amount using “GROUP BY” clause.

Expert Solution & Answer

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Answer 3

Question

Chapter 4, Problem 14CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“AVG” function:

It is the one function of aggregate function.

The “AVG” function is used to compute the average value in a column.

Example:

The example for “AVG” function is given below:

SELECT AVG(MARK_CREDIT) FROM STUDENT;

The above query is used to display the average of mark credit from “STUDENT” table using “AVG” function.

“GROUP BY” Clause:

User can group the data using “GROUP BY” clause.

This clause allows the user to group data on a specific column and then computes statistics when user preferred.

Example:

The example for “GROUP BY” clause is given below:

SELECT CUSTOMER_NAME, SUM(AMOUNT) FROM CUSTOMERS GROUP BY CUSTOMER_NAME;

The above query is used to list the customer name and the sum of amount using “GROUP BY” clause.

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Answer 4

Question

Chapter 4, Problem 14CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“AVG” function:

It is the one function of aggregate function.

The “AVG” function is used to compute the average value in a column.

Example:

The example for “AVG” function is given below:

SELECT AVG(MARK_CREDIT) FROM STUDENT;

The above query is used to display the average of mark credit from “STUDENT” table using “AVG” function.

“GROUP BY” Clause:

User can group the data using “GROUP BY” clause.

This clause allows the user to group data on a specific column and then computes statistics when user preferred.

Example:

The example for “GROUP BY” clause is given below:

SELECT CUSTOMER_NAME, SUM(AMOUNT) FROM CUSTOMERS GROUP BY CUSTOMER_NAME;

The above query is used to list the customer name and the sum of amount using “GROUP BY” clause.

Expert Solution & Answer

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Answer 5

Chapter 4, Problem 14CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“AVG” function:

It is the one function of aggregate function.

The “AVG” function is used to compute the average value in a column.

Example:

The example for “AVG” function is given below:

SELECT AVG(MARK_CREDIT) FROM STUDENT;

The above query is used to display the average of mark credit from “STUDENT” table using “AVG” function.

“GROUP BY” Clause:

User can group the data using “GROUP BY” clause.

This clause allows the user to group data on a specific column and then computes statistics when user preferred.

Example:

The example for “GROUP BY” clause is given below:

SELECT CUSTOMER_NAME, SUM(AMOUNT) FROM CUSTOMERS GROUP BY CUSTOMER_NAME;

The above query is used to list the customer name and the sum of amount using “GROUP BY” clause.

Answer 6

Chapter 4, Problem 14CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“AVG” function:

It is the one function of aggregate function.

The “AVG” function is used to compute the average value in a column.

Example:

The example for “AVG” function is given below:

SELECT AVG(MARK_CREDIT) FROM STUDENT;

The above query is used to display the average of mark credit from “STUDENT” table using “AVG” function.

“GROUP BY” Clause:

User can group the data using “GROUP BY” clause.

This clause allows the user to group data on a specific column and then computes statistics when user preferred.

Example:

The example for “GROUP BY” clause is given below:

SELECT CUSTOMER_NAME, SUM(AMOUNT) FROM CUSTOMERS GROUP BY CUSTOMER_NAME;

The above query is used to list the customer name and the sum of amount using “GROUP BY” clause.

Answer 7

Chapter 4, Problem 14CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“AVG” function:

It is the one function of aggregate function.

The “AVG” function is used to compute the average value in a column.

Example:

The example for “AVG” function is given below:

SELECT AVG(MARK_CREDIT) FROM STUDENT;

The above query is used to display the average of mark credit from “STUDENT” table using “AVG” function.

“GROUP BY” Clause:

User can group the data using “GROUP BY” clause.

This clause allows the user to group data on a specific column and then computes statistics when user preferred.

Example:

The example for “GROUP BY” clause is given below:

SELECT CUSTOMER_NAME, SUM(AMOUNT) FROM CUSTOMERS GROUP BY CUSTOMER_NAME;

The above query is used to list the customer name and the sum of amount using “GROUP BY” clause.

Answer 8

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Answer 19

Ch. 4 - Prob. 1RQ Ch. 4 - Prob. 2RQ Ch. 4 - Prob. 3RQ Ch. 4 - Prob. 4RQ Ch. 4 - Prob. 5RQ Ch. 4 - In which clause would you use a wildcard in a...Ch. 4 - Prob. 7RQ Ch. 4 - How do you determine whether a column contains one...Ch. 4 - Prob. 9RQ Ch. 4 - Prob. 10RQ

Solution Summary: The author describes the "SELECT" command, which retrieves data in a database. The "AVG" function computes the average value in the column.

Chapter 4 Solutions