DBMS UNIT 1: Theory Questions on Database Approach and Characteristics
12 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the main difference between the database approach and traditional file systems?

  • Database approach relies on flat files, while traditional file systems use relational databases.
  • Database approach uses a centralized approach to data management, while traditional file systems are decentralized.
  • Database approach is more prone to data corruption than traditional file systems.
  • Database approach allows for data independence, while traditional file systems do not. (correct)

    • Which of the following best defines metadata in a database context?

  • Metadata refers to the data that is stored in a database.
  • Metadata is another term for the database schema.
  • Metadata is data that provides information about other data. (correct)
  • Metadata is the physical implementation of the database schema.

    • In a company database, what do relationship constraints define?

  • Relationship constraints define the rules for updating data in a table.
  • Relationship constraints define the attributes that must have values in each record.
  • Relationship constraints define the number of records in a table.
  • Relationship constraints define how tables are linked in a database. (correct)

    • What is the purpose of defining weak entity types in a database?

    <p>Weak entity types define entities that rely on other entities for identification.</p> Signup and view all the answers

    How do entity and attribute differ in a database context?

    <p>Entity is a collection of attributes, while attribute describes an entity.</p> Signup and view all the answers

    What does Data Independence refer to in database management?

    <p>Data Independence refers to the separation of data storage details from application programs.</p> Signup and view all the answers

    What is the role of mapping among schemas in database design?

    <p>Ensuring consistency and integrity between related schemas</p> Signup and view all the answers

    Which of the following best describes structural constraints on relationship types in a database?

    <p>They define permissible relationships among entities</p> Signup and view all the answers

    What is a weak entity type in a database schema?

    <p>An entity whose existence depends on another entity</p> Signup and view all the answers

    How does a partial key contribute to the design of a weak entity set?

    <p>It provides additional but not sufficient identification for the weak entity set</p> Signup and view all the answers

    In the given Banking database scenario, what does it mean for a Customer to have both types of relationship with a bank branch?

    <p>The customer can have both account and loan transactions with a branch</p> Signup and view all the answers

    What characteristic distinguishes a Manager's role in controlling a department in the database schema?

    <p>Overseeing the operations and decision-making processes within a specific department</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser