12 Questions
What is an object in the context of object-oriented databases?
A real-world entity, such as a specific task, with its own state and behaviors.
What are the two main components of an object's state?
Properties (attributes) and behaviors (methods)
What is the purpose of a class in object-oriented databases?
To group all objects with the same properties and behaviors
What is the key difference between object-oriented databases and traditional relational databases?
Object-oriented databases store and manage objects directly, without tables, rows, columns, or foreign keys.
What is the advantage of object-oriented databases in terms of querying complex data?
Fast queries with complex data
What is the concept of abstraction in object-oriented databases?
Capturing the necessary information to perform desired functionality while excluding unneeded information.
What is a key feature of object-oriented databases that supports code reuse and modularity?
Inheritance and polymorphism
What is the concept of polymorphism in object-oriented databases?
A child class using class attributes like its parent class, while retaining its unique methods and attributes.
What is a disadvantage of object-oriented databases compared to relational databases?
Limited support for SQL
What is the purpose of the Object Definition Language (ODL) in object-oriented databases?
To define the structure of an Entity-relationship diagram
What is the primary language used for querying object-oriented databases?
Object Query Language (OQL)
What is a characteristic of ODL class definitions in object-oriented databases?
They look like Entity sets with binary relationships, plus methods
Learn about the building blocks of object-oriented databases, including objects, attributes, and methods. Discover how objects represent real-world entities and how they have properties and behaviors that define their state.
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