Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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The parent class is A, while the subclasses are B and C. B and C have some comparable features and methods, however their implementations for some of their methods are vastly different. Using logic, explain what A will be: a concrete class, an abstract class, or an interface.
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- The parent class is A, and the subclasses are B and C. The parent class is A, and the subclasses are B and C. B and C have several features and methods in common, but their implementations of some of these features and techniques are drastically different from one another. Explain what A will be in terms of logic: will it be a concrete class, an abstract class, or an interface?arrow_forwardClass A is the parent class, while classes B and C are the subclasses of A. Both B and C contain several features and techniques that are equivalent to one another; nevertheless, the implementations of some of their methods are quite different between the two. Explain what kind of class A will be using logic; is it going to be a concrete class, an abstract class, or an interface?arrow_forwardThe most significant aspect of implementation development is the creation and adherence to the interface. The procedure may be summarised as follows:1. Create an interface. The interface specifies the external characteristics that are shared by all implementations.2. A simplified implementation. The abstract implementation defines the internal features that are shared by all implementations.3. The abstract class's extension. Each implementation recommends a distinct way to developing code that extends the abstract implementation and fulfils the interface's needed parts.arrow_forward
- Abstract methods must be implemented by any subclass of an abstract class that is derived from it. Whether or if it's accuratearrow_forwardA Person class has four attributes SSN, age, gender, and address. Normally, SSN and gender are not expected to be changed after the values are set for a person object. Show the UML class diagram for this Person class.arrow_forwardAnswer by true or false 1.An abstract class can contain only abstract methods . 2. An abstract class that extends another abstract class must provide an implementation for all the abstract methods that are defined in the superclass . 3. A parent's constructor can be invoked using the super reference . 4. All Java classes are derived , directly or indirectly , from the Object class . 5. The child of one class can be the parent of one or more other classes .arrow_forward
- Question: Differentiate between the following OOP concepts, support your answers with examples. Abstract Superclass Interface Definition Uses Examples Final methods Static methods Definition Uses Examples Static binding Dynamic Binding Definition Uses Examplesarrow_forwardEach concrete subclass of an abstract class must provide equivalent implementations for all abstract methods defined by the superclass. How truthful or untrue is that?arrow_forwardAll of the abstract methods that the parent class has defined must be implemented by any subclass. What do you think?arrow_forward
- QUESTION 8 An cannot be instantiated, they act as place holders for abstraction. O a. Abstract class O b. Subclass O C. Superclass O d. Parent classarrow_forwardIn order to qualify as a subclass of an abstract class, a class must offer concrete implementations for all of the abstract methods defined in the abstract parent class. Exactly how do you feel about this?arrow_forwardQuestion Kh Write the definition of classes and interfaces in the given diagram using following details: a) Interface shape has a method draw(). b) Override the method draw() in all subclasses. c) Define a non-abstract method fillColor() in Circle class. Full explain this question very fast solution sent me step by step Don't ignore any part all part work uarrow_forward
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