Chapter 7, Problem 1MC

Question

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Answer 1

Expert Solution & Answer

Chapter 7, Problem 1MC

Program Description Answer

In an array declaration, “size declarator” indicates the number of elements that the array will have.

Hence, the correct answer is option “B”.

Expert Solution & Answer

Explanation of Solution

Size declarator:

In an array the “size declarator” must be a non-negative integer expression. It may be a variable or a literal value. It is a common practice to use a final variable as a size declarator.

Example:

final int NUM_ELEMENTS = 6;

int[] numbers = new int[NUM_ELEMENTS];

Explanation for wrong answers:

a.Subscript:

A “subscript” is used as an index to pinpoint a specific element within an array.

Hence, the option “A” is wrong.

c.element sum:

The “element sum” is used to add the numbers of element in an array.

Hence, the option “C” is wrong.

d.Reference variable:

The user declare a “reference variable” and use the new keyword to create an instance of the array in memory. The reference variable can be declared as follows:

numbers = new int[6];

Hence, the option “D” is wrong.

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03:59

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Given a relation schema R = (A, B, C, D, E,G) with a set of functional dependencies F {ABCD BC → DE B→ D D→ A}. (a) Show that R is not in BCNF using the functional dependency A → BCD. (b) Show that AG is a superkey for R (c) Compute a canonical cover Fc for the set of functional dependencies F. Show your work. (d) Give a 3NF decomposition of R based on the canonical cover found in (c). Show your work. (e) Give a BCNF decomposition of R using F. Show your work.

Answer 2

Expert Solution & Answer

Chapter 7, Problem 1MC

Program Description Answer

In an array declaration, “size declarator” indicates the number of elements that the array will have.

Hence, the correct answer is option “B”.

Expert Solution & Answer

Explanation of Solution

Size declarator:

In an array the “size declarator” must be a non-negative integer expression. It may be a variable or a literal value. It is a common practice to use a final variable as a size declarator.

Example:

final int NUM_ELEMENTS = 6;

int[] numbers = new int[NUM_ELEMENTS];

Explanation for wrong answers:

a.Subscript:

A “subscript” is used as an index to pinpoint a specific element within an array.

Hence, the option “A” is wrong.

c.element sum:

The “element sum” is used to add the numbers of element in an array.

Hence, the option “C” is wrong.

d.Reference variable:

The user declare a “reference variable” and use the new keyword to create an instance of the array in memory. The reference variable can be declared as follows:

numbers = new int[6];

Hence, the option “D” is wrong.

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03:59

Answer 3

Expert Solution & Answer

Chapter 7, Problem 1MC

Program Description Answer

In an array declaration, “size declarator” indicates the number of elements that the array will have.

Hence, the correct answer is option “B”.

Expert Solution & Answer

Explanation of Solution

Size declarator:

In an array the “size declarator” must be a non-negative integer expression. It may be a variable or a literal value. It is a common practice to use a final variable as a size declarator.

Example:

final int NUM_ELEMENTS = 6;

int[] numbers = new int[NUM_ELEMENTS];

Explanation for wrong answers:

a.Subscript:

A “subscript” is used as an index to pinpoint a specific element within an array.

Hence, the option “A” is wrong.

c.element sum:

The “element sum” is used to add the numbers of element in an array.

Hence, the option “C” is wrong.

d.Reference variable:

The user declare a “reference variable” and use the new keyword to create an instance of the array in memory. The reference variable can be declared as follows:

numbers = new int[6];

Hence, the option “D” is wrong.

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03:59

Answer 4

Expert Solution & Answer

Chapter 7, Problem 1MC

Program Description Answer

In an array declaration, “size declarator” indicates the number of elements that the array will have.

Hence, the correct answer is option “B”.

Expert Solution & Answer

Explanation of Solution

Size declarator:

In an array the “size declarator” must be a non-negative integer expression. It may be a variable or a literal value. It is a common practice to use a final variable as a size declarator.

Example:

final int NUM_ELEMENTS = 6;

int[] numbers = new int[NUM_ELEMENTS];

Explanation for wrong answers:

a.Subscript:

A “subscript” is used as an index to pinpoint a specific element within an array.

Hence, the option “A” is wrong.

c.element sum:

The “element sum” is used to add the numbers of element in an array.

Hence, the option “C” is wrong.

d.Reference variable:

The user declare a “reference variable” and use the new keyword to create an instance of the array in memory. The reference variable can be declared as follows:

numbers = new int[6];

Hence, the option “D” is wrong.

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03:59

Answer 5

Expert Solution & Answer

Answer 6

Expert Solution & Answer

Answer 7

Chapter 7, Problem 1MC

Program Description Answer

In an array declaration, “size declarator” indicates the number of elements that the array will have.

Hence, the correct answer is option “B”.

Expert Solution & Answer

Explanation of Solution

Size declarator:

In an array the “size declarator” must be a non-negative integer expression. It may be a variable or a literal value. It is a common practice to use a final variable as a size declarator.

Example:

final int NUM_ELEMENTS = 6;

int[] numbers = new int[NUM_ELEMENTS];

Explanation for wrong answers:

a.Subscript:

A “subscript” is used as an index to pinpoint a specific element within an array.

Hence, the option “A” is wrong.

c.element sum:

The “element sum” is used to add the numbers of element in an array.

Hence, the option “C” is wrong.

d.Reference variable:

The user declare a “reference variable” and use the new keyword to create an instance of the array in memory. The reference variable can be declared as follows:

numbers = new int[6];

Hence, the option “D” is wrong.

Answer 8

Chapter 7, Problem 1MC

Program Description Answer

In an array declaration, “size declarator” indicates the number of elements that the array will have.

Hence, the correct answer is option “B”.

Expert Solution & Answer

Explanation of Solution

Size declarator:

In an array the “size declarator” must be a non-negative integer expression. It may be a variable or a literal value. It is a common practice to use a final variable as a size declarator.

Example:

final int NUM_ELEMENTS = 6;

int[] numbers = new int[NUM_ELEMENTS];

Explanation for wrong answers:

a.Subscript:

A “subscript” is used as an index to pinpoint a specific element within an array.

Hence, the option “A” is wrong.

c.element sum:

The “element sum” is used to add the numbers of element in an array.

Hence, the option “C” is wrong.

d.Reference variable:

The user declare a “reference variable” and use the new keyword to create an instance of the array in memory. The reference variable can be declared as follows:

numbers = new int[6];

Hence, the option “D” is wrong.

Answer 9

Chapter 7, Problem 1MC

Program Description Answer

In an array declaration, “size declarator” indicates the number of elements that the array will have.

Hence, the correct answer is option “B”.

Answer 10

Expert Solution & Answer

Explanation of Solution

Size declarator:

In an array the “size declarator” must be a non-negative integer expression. It may be a variable or a literal value. It is a common practice to use a final variable as a size declarator.

Example:

final int NUM_ELEMENTS = 6;

int[] numbers = new int[NUM_ELEMENTS];

Explanation for wrong answers:

a.Subscript:

A “subscript” is used as an index to pinpoint a specific element within an array.

Hence, the option “A” is wrong.

c.element sum:

The “element sum” is used to add the numbers of element in an array.

Hence, the option “C” is wrong.

d.Reference variable:

The user declare a “reference variable” and use the new keyword to create an instance of the array in memory. The reference variable can be declared as follows:

numbers = new int[6];

Hence, the option “D” is wrong.