Database Fundamentals

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Questions and Answers

Which of the following best defines a database?

  • A collection of unrelated data
  • A random assortment of information
  • A group of multimedia files
  • A set of known facts with implicit meaning (correct)

What are traditional database applications primarily used for?

  • Storing images and video streams
  • Recording known facts with implicit meaning
  • Storing textual and numeric information (correct)
  • Managing geographic information systems

What is a database often referred to as?

  • A miniworld or universe of discourse (correct)
  • A brief history of database applications
  • A set of workers behind the scene
  • A random collection of data

What is the purpose of a database management system (DBMS)?

<p>To provide a logical coherence to data (B)</p> Signup and view all the answers

When should a DBMS not be used?

<p>When unrelated data needs to be stored (B)</p> Signup and view all the answers

Which step in the ER-to-Relational Mapping Algorithm involves mapping of regular entity types?

<p>Step 1 (B)</p> Signup and view all the answers

Which step in the ER-to-Relational Mapping Algorithm involves mapping of weak entity types?

<p>Step 2 (A)</p> Signup and view all the answers

Which step in the ER-to-Relational Mapping Algorithm involves mapping of binary 1:1 relation types?

<p>Step 3 (B)</p> Signup and view all the answers

Which step in the ER-to-Relational Mapping Algorithm involves mapping of binary 1:N relationship types?

<p>Step 4 (C)</p> Signup and view all the answers

Which step in the ER-to-Relational Mapping Algorithm involves mapping of binary M:N relationship types?

<p>Step 5 (C)</p> Signup and view all the answers

Which step in the ER-to-Relational Mapping Algorithm involves mapping of multivalued attributes?

<p>Step 6: Mapping of Multivalued attributes (D)</p> Signup and view all the answers

What is the purpose of mapping regular entity types in the ER-to-Relational Mapping Algorithm?

<p>To create a relation that includes all the simple attributes of the regular entity type (C)</p> Signup and view all the answers

Which step in the ER-to-Relational Mapping Algorithm involves mapping of N-ary relationship types?

<p>Step 7: Mapping of N-ary Relationship Types (A)</p> Signup and view all the answers

What are the options for mapping specialization or generalization in the EER Model Constructs to Relations?

<p>Step 8: Options for Mapping Specialization or Generalization (D)</p> Signup and view all the answers

What does the ER-to-Relational Mapping Algorithm involve?

<p>All of the above (D)</p> Signup and view all the answers

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