Data attribute: Data attributes are the properties of class that are stored in an object. The values of the data items which are stored inside an object are called data attributes. The data attributes can be accessed using dot operator. For example, a class “Car” has the properties such as car model, manufacture date, car name. These properties are the data attribute of “Car”. Encapsulation: It combines the data and code into a single object It helps in restricting access to the methods. This helps in preventing the data from being modified due to accident. Object’s variable is not directly accessible. Underscore helps in preventing the data being accessed directly. The encapsulation rules in python can be summarized as Public method It is accessible from anywhere. Public variables It can be accessed from anywhere. Private method It can be accessed only in their own class Private method It is accessible only in their class or method.

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Answer 1

Question

Chapter 14, Problem 2SA

Program Plan Intro

Data attribute:

Data attributes are the properties of class that are stored in an object.

The values of the data items which are stored inside an object are called data attributes.

The data attributes can be accessed using dot operator.

For example, a class “Car” has the properties such as car model, manufacture date, car name. These properties are the data attribute of “Car”.

Encapsulation:

It combines the data and code into a single object

It helps in restricting access to the methods.

This helps in preventing the data from being modified due to accident.

Object’s variable is not directly accessible.

Underscore helps in preventing the data being accessed directly.

The encapsulation rules in python can be summarized as

Public method It is accessible from anywhere.
Public variables It can be accessed from anywhere.
Private method It can be accessed only in their own class
Private method It is accessible only in their class or method.

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Given the dependency diagram of attributes C1,C2,C3,C4,C5 in a table shown in the following figure, the primary key attributes are underlined. Make a database with multiple tables from attributes as shown above that are in 3NF, showing PK, non-key attributes, and FK for each table? Assume the tables are already in 1NF. Hint: 3 tables will result after deducing 1NF -> 2NF -> 3NF]

1. Using one of the method described in class and/or textbook (Section 9.1) convert the following regular expression into a state transition diagram: (0+ 10*1)* (01 + 10) Indicate in your answer how did you arrive at the result as follows: Write down all the state transition diagrams that you constructed for all the subexpressions and clearly indicate which diagram corresponds to which expression. Do not simplify any state transition diagram. 2. Consider the following state transition diagram over Σ = {a,b}: b A a a C b B a a b D За a Using the method described in class and in the textbook (Section 9.2) convert the diagram into an equivalent regular expression. Include all the intermediate steps in your answer. 3. Are the languages L1, L2, and L3 below over the alphabet Σ = {a, b, c} regular or non-regular? Justify your answer carefully. (a) L₁ = {a¹b2jc²i : i ≥ 0, j > 2} (b) L₂ = L₁n {akbm c³p: k,m,p≥ 0} (c) L3 = {a²ib²j+1 : i,j ≥ 0}^{akbm c³p : k,m,p ≥ 0}

(1 point) By dragging statements from the left column to the right column below, give a proof by induction of the following statement: an = = 9" - 1 is a solution to the recurrence relation an = 9an-18 with ao = : 0. The correct proof will use 8 of the statements below. Statements to choose from: Note that a₁ = 9a0 + 8. Now assume that P(n) is true for all n ≥ 0. Your Proof: Put chosen statements in order in this column and press the Submit Answers button. Let P(n) be the predicate, "a = 9″ – 1". απ = 90 − 1 = Note that Let P(n) be the predicate, "an 9" - 1 is a solution to the recurrence relation an = 9an-1 +8 with ao = 0." - Now assume that P(k + 1) is true. Thus P(k) is true for all k. Thus P(k+1) is true. Then ak+1 = 9ak +8, so P(k + 1) is true. = 1 − 1 = 0, as required. Then = 9k — 1. ak Now assume that P(k) is true for an arbitrary integer k ≥ 1. By the recurrence relation, we have ak+1 = ak+1 = = 9ak + 8 = 9(9k − 1) + 8 This simplifies to 9k+19+8 = 9k+1 − 1 Then 9k+1 − 1 = 9(9*…

Answer 2

Question

Chapter 14, Problem 2SA

Program Plan Intro

Data attribute:

Data attributes are the properties of class that are stored in an object.

The values of the data items which are stored inside an object are called data attributes.

The data attributes can be accessed using dot operator.

For example, a class “Car” has the properties such as car model, manufacture date, car name. These properties are the data attribute of “Car”.

Encapsulation:

It combines the data and code into a single object

It helps in restricting access to the methods.

This helps in preventing the data from being modified due to accident.

Object’s variable is not directly accessible.

Underscore helps in preventing the data being accessed directly.

The encapsulation rules in python can be summarized as

Public method It is accessible from anywhere.
Public variables It can be accessed from anywhere.
Private method It can be accessed only in their own class
Private method It is accessible only in their class or method.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 14, Problem 2SA

Program Plan Intro

Data attribute:

Data attributes are the properties of class that are stored in an object.

The values of the data items which are stored inside an object are called data attributes.

The data attributes can be accessed using dot operator.

For example, a class “Car” has the properties such as car model, manufacture date, car name. These properties are the data attribute of “Car”.

Encapsulation:

It combines the data and code into a single object

It helps in restricting access to the methods.

This helps in preventing the data from being modified due to accident.

Object’s variable is not directly accessible.

Underscore helps in preventing the data being accessed directly.

The encapsulation rules in python can be summarized as

Public method It is accessible from anywhere.
Public variables It can be accessed from anywhere.
Private method It can be accessed only in their own class
Private method It is accessible only in their class or method.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 14, Problem 2SA

Program Plan Intro

Data attribute:

Data attributes are the properties of class that are stored in an object.

The values of the data items which are stored inside an object are called data attributes.

The data attributes can be accessed using dot operator.

For example, a class “Car” has the properties such as car model, manufacture date, car name. These properties are the data attribute of “Car”.

Encapsulation:

It combines the data and code into a single object

It helps in restricting access to the methods.

This helps in preventing the data from being modified due to accident.

Object’s variable is not directly accessible.

Underscore helps in preventing the data being accessed directly.

The encapsulation rules in python can be summarized as

Public method It is accessible from anywhere.
Public variables It can be accessed from anywhere.
Private method It can be accessed only in their own class
Private method It is accessible only in their class or method.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 14, Problem 2SA

Program Plan Intro

Data attribute:

Data attributes are the properties of class that are stored in an object.

The values of the data items which are stored inside an object are called data attributes.

The data attributes can be accessed using dot operator.

For example, a class “Car” has the properties such as car model, manufacture date, car name. These properties are the data attribute of “Car”.

Encapsulation:

It combines the data and code into a single object

It helps in restricting access to the methods.

This helps in preventing the data from being modified due to accident.

Object’s variable is not directly accessible.

Underscore helps in preventing the data being accessed directly.

The encapsulation rules in python can be summarized as

Public method It is accessible from anywhere.
Public variables It can be accessed from anywhere.
Private method It can be accessed only in their own class
Private method It is accessible only in their class or method.

Answer 6

Chapter 14, Problem 2SA

Program Plan Intro

Data attribute:

Data attributes are the properties of class that are stored in an object.

The values of the data items which are stored inside an object are called data attributes.

The data attributes can be accessed using dot operator.

For example, a class “Car” has the properties such as car model, manufacture date, car name. These properties are the data attribute of “Car”.

Encapsulation:

It combines the data and code into a single object

It helps in restricting access to the methods.

This helps in preventing the data from being modified due to accident.

Object’s variable is not directly accessible.

Underscore helps in preventing the data being accessed directly.

The encapsulation rules in python can be summarized as

Public method It is accessible from anywhere.
Public variables It can be accessed from anywhere.
Private method It can be accessed only in their own class
Private method It is accessible only in their class or method.

Answer 7

Chapter 14, Problem 2SA

Program Plan Intro

Data attribute:

Data attributes are the properties of class that are stored in an object.

The values of the data items which are stored inside an object are called data attributes.

The data attributes can be accessed using dot operator.

For example, a class “Car” has the properties such as car model, manufacture date, car name. These properties are the data attribute of “Car”.

Encapsulation:

It combines the data and code into a single object

It helps in restricting access to the methods.

This helps in preventing the data from being modified due to accident.

Object’s variable is not directly accessible.

Underscore helps in preventing the data being accessed directly.

The encapsulation rules in python can be summarized as

Public method It is accessible from anywhere.
Public variables It can be accessed from anywhere.
Private method It can be accessed only in their own class
Private method It is accessible only in their class or method.

Answer 8

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Answer 11

Ch. 14.1 - What is an object?Ch. 14.1 - Prob. 14.2CP Ch. 14.1 - Prob. 14.3CP Ch. 14.1 - What are public methods? What are private methods?Ch. 14.2 - You hear someone make the following comment: A...Ch. 14.2 - In this chapter, we use the metaphor of a cookie...Ch. 14.2 - Prob. 14.7CP Ch. 14.2 - Prob. 14.8CP Ch. 14.2 - When a class variable is said to reference an...Ch. 14.2 - Prob. 14.10CP

Solution Summary: The author explains that data attributes are the properties of class that are stored in an object. Encapsulation helps in restricting access to the methods.

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Chapter 14 Solutions

Public method	It is accessible from anywhere.
Public variables	It can be accessed from anywhere.
Private method	It can be accessed only in their own class
Private method	It is accessible only in their class or method.