What is polymorphism in the context of object-oriented programming?

The ability of different classes to respond to the same method name in their own way

The process of hiding implementation details within a class

The process of copying an object's attributes to a new object

The ability to create multiple instances from a single class

In the following code, what is `self.name`?\n```python\nclass Product:\n def __init__(self, name):\n self.name = name\n```

An instance attribute unique to each object

A class attribute shared by all instances

A global variable accessible from anywhere

A local variable accessible only inside `__init__`

A data model represents a University that has multiple Department objects, and each Department has multiple Professor objects. The analyst needs to model this so that a Department can exist independently of the University, but a Professor cannot exist without a Department. Additionally, the University should be able to add and remove Departments. Which combination of relationships is correct?

Both relationships are composition.

University-Department is aggregation, and Department-Professor is composition.

Both relationships are aggregation.

University-Department is composition, and Department-Professor is aggregation.

Python InstitutePCAD - Certified Associate in Data Analytics with Python

Domain 2Objective 3

Object-Oriented Programming for Data Modeling PCAD-31 Practice Questions (Page 5)

Part of the Programming and Database Skills domain, which accounts for 33.3% of the PCAD-31 exam. Python Institute does not publish an official question count, but from its 60-minute exam (~25–40 total, ~8–8 in this domain), expect 2–2 from this objective — we provide 26 practice questions to prepare you well beyond it. (estimate)

26questions here

6free pages

12concepts

33.3%of the exam

Questions 21–25

21foundation · easy
Which relationship is best described as a 'has-a' relationship where the part can exist independently of the whole?
Select an answer first
22foundation · easy
What is polymorphism in the context of object-oriented programming?
Select an answer first
23foundation · easy
In the following code, what is `self.name`?\n```python\nclass Product:\n def __init__(self, name):\n self.name = name\n```
Select an answer first
24expert · hard
A data model represents a University that has multiple Department objects, and each Department has multiple Professor objects. The analyst needs to model this so that a Department can exist independently of the University, but a Professor cannot exist without a Department. Additionally, the University should be able to add and remove Departments. Which combination of relationships is correct?
Select an answer first
25foundation · easy
Which design pattern is used to create objects without specifying the exact class of object that will be created?
Select an answer first

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Object-Oriented Programming for Data Modeling PCAD-31 Practice Questions (Page 5)

Questions 21–25

Which relationship is best described as a 'has-a' relationship where the part can exist independently of the whole?

What is polymorphism in the context of object-oriented programming?

In the following code, what is `self.name`?\n```python\nclass Product:\n def __init__(self, name):\n self.name = name\n```

Which design pattern is used to create objects without specifying the exact class of object that will be created?

Keep studying — Programming and Database Skills

In the following code, what is `self.name`?\n```python\nclass Product:\n def init(self, name):\n self.name = name\n```