14) Which of the following is an advantage of a doubly linked structure over a singly linked structure? a. it is less complex to implement b. you can easily access the next of an item C. you can easily access the successor of an item d. none of them e. All of them 15) 27) How is creating a subclass of an existing class different from copying the code from the existing class to a new file? a. no methods need be created or modified b. you don't need an __init__ method C. the name of the subclass is in parentheses of the class header d. delete all the methods that don't have to change 33) When you finish writing the abstract class, what must the subclasses do to use it? a. reference the abstract class in their__init_method. b. copy the code to the subclass file C. import the abstract class d. nothing, the abstract class is automatically included in subclass
14) Which of the following is an advantage of a doubly linked structure over a singly linked structure? a. it is less complex to implement b. you can easily access the next of an item C. you can easily access the successor of an item d. none of them e. All of them 15) 27) How is creating a subclass of an existing class different from copying the code from the existing class to a new file? a. no methods need be created or modified b. you don't need an __init__ method C. the name of the subclass is in parentheses of the class header d. delete all the methods that don't have to change 33) When you finish writing the abstract class, what must the subclasses do to use it? a. reference the abstract class in their__init_method. b. copy the code to the subclass file C. import the abstract class d. nothing, the abstract class is automatically included in subclass
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
14) Which of the following is an advantage of a doubly linked structure over a singly linked structure?
a. it is less complex to implement
b. you can easily access the next of an item
C. you can easily access the successor of an item
d. none of them
e. All of them
15)
27) How is creating a subclass of an existing class different from copying the code from the existing class to a new file?
a. no methods need be created or modified
b. you don't need an __init__ method
C. the name of the subclass is in parentheses of the class header
d. delete all the methods that don't have to change
33) When you finish writing the abstract class, what must the subclasses do to use it?
a. reference the abstract class in their__init_method.
b. copy the code to the subclass file
C. import the abstract class
d. nothing, the abstract class is automatically included in subclass
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