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Database System Concepts
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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**3. Inheritance (reference example 3b)** a) Implement a class `Vehicle` with `make` and `model` instance attributes. b) Implement a class `Boat` that inherits from the class `Vehicle`. c) The `Boat` class has a single instance attribute `poweredBy`. d) Implement a `Boat` init method. e) Inside the `Boat` init method, call the `Vehicle` init method, passing the `make` and `model` from `Boat` to `Vehicle`. f) Instantiate two objects of type `Boat`. - `boat_1` info: `make=Regal`, `model=Bowrider`, `poweredBy=sail` - `boat_2` info: `make=Searay`, `model=Sundancer`, `poweredBy=motor` g) Print `boat_1`'s `make`, `model`, and `poweredBy` attribute values. h) Print `boat_2`'s `make`, `model`, and `poweredBy` attribute values. **OUTPUT EXAMPLE** ``` Regal Bowrider sail Searay Sundancer motor ```
Transcribed Image Text:**3. Inheritance (reference example 3b)** a) Implement a class `Vehicle` with `make` and `model` instance attributes. b) Implement a class `Boat` that inherits from the class `Vehicle`. c) The `Boat` class has a single instance attribute `poweredBy`. d) Implement a `Boat` init method. e) Inside the `Boat` init method, call the `Vehicle` init method, passing the `make` and `model` from `Boat` to `Vehicle`. f) Instantiate two objects of type `Boat`. - `boat_1` info: `make=Regal`, `model=Bowrider`, `poweredBy=sail` - `boat_2` info: `make=Searay`, `model=Sundancer`, `poweredBy=motor` g) Print `boat_1`'s `make`, `model`, and `poweredBy` attribute values. h) Print `boat_2`'s `make`, `model`, and `poweredBy` attribute values. **OUTPUT EXAMPLE** ``` Regal Bowrider sail Searay Sundancer motor ```
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