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Database System: Data vs. Information and Hierarchy
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Database System: Data vs. Information and Hierarchy

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Questions and Answers

Which category of end-users is typically unaware of the DBMS?

  • Naïve users (correct)
  • Sophisticated users
  • Application programmers
  • Physical Database Designers
  • What role does the Physical Database Designer play in the database design process?

  • Decides how the logical data model is physically realized (correct)
  • Creates the required functionality for end-users
  • Defines the logical data model
  • Classifies end-users according to their system usage
  • What is one of the advantages of using a DBMS related to data control?

  • Reduced data integrity
  • Decreased data consistency
  • Increased data redundancy
  • Sharing of data (correct)
  • Which factor is considered a disadvantage of using a DBMS?

    <p>Training costs</p> Signup and view all the answers

    What is a function of a DBMS in the database environment?

    <p>Deciding how data is physically stored</p> Signup and view all the answers

    Which type of users are familiar with the structure of the database and DBMS facilities?

    <p>'Sophisticated' users</p> Signup and view all the answers

    What is the main difference between data and information?

    <p>Data are characters or bytes, while information reveals trends or patterns.</p> Signup and view all the answers

    What is a 'field' in the context of a database system?

    <p>A combination of characters that describe an aspect of a business object</p> Signup and view all the answers

    Which level of the hierarchy of data involves a collection of related records?

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

    What is the highest level in the hierarchy of data?

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

    Which characteristic of good information refers to freedom from errors?

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

    What does it mean when information is described as 'timely'?

    <p>'Timely' signifies that the information is delivered when it is needed.</p> Signup and view all the answers

    What is the primary disadvantage of the traditional data approach mentioned in the text?

    <p>Limited data sharing</p> Signup and view all the answers

    Which term refers to a distinct object in an organization that is to be represented in the database?

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

    What does DBMS stand for in the context of the database environment?

    <p>Database Management System</p> Signup and view all the answers

    In a centralized database, where is all the data typically located?

    <p>At a single site</p> Signup and view all the answers

    What is an attribute in the context of database management?

    <p>A characteristic of an entity</p> Signup and view all the answers

    Which component of the database environment is responsible for defining, creating, and controlling access to the database?

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

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