a. DISTINCT Keyword: “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: create distinct S.customer_name from depositor S where not exists( (select branch_name from branch where branch_city=’Brooklyn’) except (select R...

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Answer 1

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Chapter 3, Problem 15E

Explanation of Solution

a.

DISTINCT Keyword: “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:

create distinct S.customer_name from depositor S where not exists(

(select branch_name from branch where branch_city=’Brooklyn’) except

(select R...

Explanation of Solution

b.

SELECT statement:

It is used to retrieve information from the table or database. The syntax for the “SELECT” statement is given below:

SELECT *...

Explanation of Solution

c.

Query:

select branch_name from branch where assets>some (select asset from branch where branch_city=’Brooklyn’)

Explanation:

The above query is used to find the “branch_na...

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How to develop a C program that receives the message sent by the provided program and displays the name and email included in the message on the screen?Here is the code of the program that sends the message for reference: typedef struct { long tipo; struct { char nome[50]; char email[40]; } dados;} MsgStruct; int main() { int msg_id, status; msg_id = msgget(1000, 0600 | IPC_CREAT); exit_on_error(msg_id, "Creation/Connection"); MsgStruct msg; msg.tipo = 5; strcpy(msg.dados.nome, "Pedro Silva"); strcpy(msg.dados.email, "pedro@sapo.pt"); status = msgsnd(msg_id, &msg, sizeof(msg.dados), 0); exit_on_error(status, "Send"); printf("Message sent!\n");}

9. Let L₁=L(ab*aa), L₂=L(a*bba*). Find a regular expression for (L₁ UL2)*L2. 10. Show that the language is not regular. L= {a":n≥1} 11. Show a derivation tree for the string aabbbb with the grammar S→ABλ, A→aB, B→Sb. Give a verbal description of the language generated by this grammar.

14. Show that the language L= {wna (w) < Nь (w) < Nc (w)} is not context free.

Answer 2

Expert Solution & Answer

Chapter 3, Problem 15E

Explanation of Solution

a.

DISTINCT Keyword: “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:

create distinct S.customer_name from depositor S where not exists(

(select branch_name from branch where branch_city=’Brooklyn’) except

(select R...

Explanation of Solution

b.

SELECT statement:

It is used to retrieve information from the table or database. The syntax for the “SELECT” statement is given below:

SELECT *...

Explanation of Solution

c.

Query:

select branch_name from branch where assets>some (select asset from branch where branch_city=’Brooklyn’)

Explanation:

The above query is used to find the “branch_na...

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Expert Solution & Answer

Chapter 3, Problem 15E

Explanation of Solution

a.

DISTINCT Keyword: “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:

create distinct S.customer_name from depositor S where not exists(

(select branch_name from branch where branch_city=’Brooklyn’) except

(select R...

Explanation of Solution

b.

SELECT statement:

It is used to retrieve information from the table or database. The syntax for the “SELECT” statement is given below:

SELECT *...

Explanation of Solution

c.

Query:

select branch_name from branch where assets>some (select asset from branch where branch_city=’Brooklyn’)

Explanation:

The above query is used to find the “branch_na...

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 4

Expert Solution & Answer

Chapter 3, Problem 15E

Explanation of Solution

a.

DISTINCT Keyword: “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:

create distinct S.customer_name from depositor S where not exists(

(select branch_name from branch where branch_city=’Brooklyn’) except

(select R...

Explanation of Solution

b.

SELECT statement:

It is used to retrieve information from the table or database. The syntax for the “SELECT” statement is given below:

SELECT *...

Explanation of Solution

c.

Query:

select branch_name from branch where assets>some (select asset from branch where branch_city=’Brooklyn’)

Explanation:

The above query is used to find the “branch_na...

Expert Solution & Answer

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Answer 5

Expert Solution & Answer

Answer 6

Expert Solution & Answer

Answer 7

Chapter 3, Problem 15E

Explanation of Solution

a.

DISTINCT Keyword: “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:

create distinct S.customer_name from depositor S where not exists(

(select branch_name from branch where branch_city=’Brooklyn’) except

(select R...

Explanation of Solution

b.

SELECT statement:

It is used to retrieve information from the table or database. The syntax for the “SELECT” statement is given below:

SELECT *...

Explanation of Solution

c.

Query:

select branch_name from branch where assets>some (select asset from branch where branch_city=’Brooklyn’)

Explanation:

The above query is used to find the “branch_na...

Answer 8

Chapter 3, Problem 15E

Explanation of Solution

a.

DISTINCT Keyword: “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:

create distinct S.customer_name from depositor S where not exists(

(select branch_name from branch where branch_city=’Brooklyn’) except

(select R...

Answer 9

Chapter 3, Problem 15E

Explanation of Solution

a.

DISTINCT Keyword: “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:

create distinct S.customer_name from depositor S where not exists(

(select branch_name from branch where branch_city=’Brooklyn’) except

(select R...

Answer 10

Explanation of Solution

b.

SELECT statement:

It is used to retrieve information from the table or database. The syntax for the “SELECT” statement is given below:

SELECT *...

Answer 11

Explanation of Solution

b.

SELECT statement:

It is used to retrieve information from the table or database. The syntax for the “SELECT” statement is given below:

SELECT *...

Answer 12

Explanation of Solution

c.

Query:

select branch_name from branch where assets>some (select asset from branch where branch_city=’Brooklyn’)

Explanation:

The above query is used to find the “branch_na...

Answer 13

Explanation of Solution

c.

Query:

select branch_name from branch where assets>some (select asset from branch where branch_city=’Brooklyn’)

Explanation:

The above query is used to find the “branch_na...

Answer 14

Expert Solution & Answer

Answer 15

Expert Solution & Answer

Answer 16

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Answer 17

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Explanation of Solution

Explanation of Solution

b. SELECT statement: It is used to retrieve information from the table or database. The syntax for the “SELECT” statement is given below: SELECT *...

Explanation of Solution

c. Query: select branch_name from branch where assets>some (select asset from branch where branch_city=’Brooklyn’) Explanation: The above query is used to find the “branch_na...

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Chapter 3 Solutions

b.

SELECT statement:

It is used to retrieve information from the table or database. The syntax for the “SELECT” statement is given below:

SELECT *...

c.

Query:

select branch_name from branch where assets>some (select asset from branch where branch_city=’Brooklyn’)

Explanation:

The above query is used to find the “branch_na...