Database Fundamentals Quiz

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Questions and Answers

Which database model is the most popular example mentioned in the text?

  • Hierarchical model
  • Network model
  • Relational model (correct)
  • Object-oriented model

What determines the logical structure of a database?

  • Database model (correct)
  • Database instance
  • Database schema
  • Database key

What is an example of the logical structure of a database?

  • Instance
  • Table
  • Schema (correct)
  • Entity-Relationship Model

Which model uses a table-based format?

<p>Relational model (B)</p> Signup and view all the answers

What does ER stand for in the context of database modeling?

<p>Entity-Relationship (D)</p> Signup and view all the answers

In the context of database modeling, what does a database model determine?

<p>The logical structure of a database (A)</p> Signup and view all the answers

What is the purpose of the Entity-Relationship Model in database modeling?

<p>To represent the logical structure of the database (D)</p> Signup and view all the answers

What is the difference between a weak entity set and a strong entity set in the Entity-Relationship Model?

<p>A weak entity set depends on another entity set, while a strong entity set does not (B)</p> Signup and view all the answers

What is the purpose of multiway relationships in the Entity-Relationship Model?

<p>To represent relationships between more than two entity sets (C)</p> Signup and view all the answers

Which database model is mentioned as the most popular example in the text?

<p>Relational model (B)</p> Signup and view all the answers

Which model uses a table-based format?

<p>Relational model (C)</p> Signup and view all the answers

What determines the logical structure of a database?

<p>Database model (C)</p> Signup and view all the answers

Which type of key uniquely identifies an entity set?

<p>Primary key (A)</p> Signup and view all the answers

What is the logical structure of the database referred to as?

<p>Schema (C)</p> Signup and view all the answers

What does the Entity-Relationship model describe?

<p>Attributes and relationships (D)</p> Signup and view all the answers

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