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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)?

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

When should a DBMS not be used?

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

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

Step 1 (B) Signup and view all the answers

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

Step 2 (A) Signup and view all the answers

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

Step 3 (B) Signup and view all the answers

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

Step 4 (C) Signup and view all the answers

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

Step 5 (C) Signup and view all the answers

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

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

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

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

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

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

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

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

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

All of the above (D) Signup and view all the answers