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?

    <p>Encapsulation</p> Signup and view all the answers

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

    <p>Inheritance</p> 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?

    <p>Polymorphism</p> Signup and view all the answers

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

    <p>Fast queries with complex data</p> Signup and view all the answers

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

    <p>To define the structure of an Entity-relationship diagram</p> Signup and view all the answers

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

    <p>They can be complex and difficult to learn and use</p> Signup and view all the answers

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

    <p>Improved code reuse and modularity</p> Signup and view all the answers

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

    <p>They are used together to boost productivity</p> Signup and view all the answers

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

    <p>To query objects in an object-oriented database</p> Signup and view all the answers

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