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Object-Oriented Databases Fundamentals

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Questions and Answers

What is the term for a real-world entity in object-oriented databases?

Attribute
Method
Object (correct)
Class

What represents the state of an object in object-oriented databases?

Properties (correct)
Behaviors
Classes
Methods

What is the primary purpose of abstraction in object-oriented databases?

To enable inheritance
To capture necessary information and exclude unneeded information (correct)
To store objects directly on the database server's disk
To include all information

What is the term for the ability of an object to maintain a private state within its assigned class?

Encapsulation (A) Signup and view all the answers

What enables objects to acquire some of the attributes or properties of another object in object-oriented databases?

Inheritance (B) Signup and view all the answers

What enables a child class to use class attributes like its parent class, while retaining all of its unique methods and attributes?

Polymorphism (C) Signup and view all the answers

What is a key advantage of object-oriented databases compared to relational databases?

Fast queries with complex data (D) Signup and view all the answers

What is the purpose of Object Definition Language (ODL)?

To define the structure of an Entity-relationship diagram (B) Signup and view all the answers

What is a common challenge of using object-oriented databases?

They can be complex and difficult to learn and use (D) Signup and view all the answers

What is the primary benefit of object-oriented databases in terms of code?

Improved code reuse and modularity (D) Signup and view all the answers

What is the relationship between object-oriented databases and object-oriented programming languages?

They are used together to boost productivity (B) Signup and view all the answers

What is the purpose of Object Query Language (OQL)?

To query objects in an object-oriented database (D) Signup and view all the answers

Object-Oriented Databases Fundamentals

Choose a study mode

Podcast

Questions and Answers

What is the term for a real-world entity in object-oriented databases?

What represents the state of an object in object-oriented databases?

What is the primary purpose of abstraction in object-oriented databases?

What is the term for the ability of an object to maintain a private state within its assigned class?

What enables objects to acquire some of the attributes or properties of another object in object-oriented databases?

What enables a child class to use class attributes like its parent class, while retaining all of its unique methods and attributes?

What is a key advantage of object-oriented databases compared to relational databases?

What is the purpose of Object Definition Language (ODL)?

What is a common challenge of using object-oriented databases?

What is the primary benefit of object-oriented databases in terms of code?

What is the relationship between object-oriented databases and object-oriented programming languages?

What is the purpose of Object Query Language (OQL)?

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