Data Modeling Basics
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Questions and Answers

What is data modeling?

  • The process of managing end-user data
  • The process of creating a specific data model for a determined problem domain (correct)
  • The process of creating a database
  • The process of creating a graphical representation of real-world events

    • What is an entity in data modeling?

  • A graphical representation of a real-world object or event
  • An association among entities
  • A characteristic of an entity
  • A person, place, thing, or event about which data will be collected and stored (correct)

    • What is a relationship in data modeling?

  • An association among entities (correct)
  • A specific data model for a determined problem domain
  • A graphical representation of real-world data structures
  • A characteristic of an entity

    • What is a subschema in data modeling?

    <p>The portion of the database by the application programs that actually produce the desired information from the data in the database</p> Signup and view all the answers

    What is the relational model in data modeling?

    <p>A model that represents a major breakthrough for both users and designers</p> Signup and view all the answers

    What is the entity relationship model in data modeling?

    <p>A model that represents a graphical representation of entities and their relationships in a database structure</p> Signup and view all the answers

    What is the importance of data modeling?

    <p>To foster improved understanding of the organization for which the database design is developed</p> Signup and view all the answers

    What is data modeling?

    <p>The process of creating a specific data model for a determined problem domain</p> Signup and view all the answers

    What is an entity in a data model?

    <p>A person, place, thing, or event about which data will be collected and stored</p> Signup and view all the answers

    What is a subschema in a network model?

    <p>It defines the portion of the database by the application programs that actually produce the desired information from the data in the database</p> Signup and view all the answers

    What is the relational model?

    <p>It was introduced in 1970 by E. F. Codd of IBM</p> Signup and view all the answers

    What is the entity-relationship model?

    <p>It was introduced in 1976 by Peter Chen</p> Signup and view all the answers

    What is a segment in the hierarchical model?

    <p>The equivalent of a file system's record type</p> Signup and view all the answers

    What is the importance of data modeling?

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

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    Description

    Test your knowledge on data models with this quiz! Learn about the basics of data modeling and how it is used in designing databases. This quiz will cover the different types of data models, their applications, and how they are created. Sharpen your skills and enhance your understanding of data modeling with this interactive quiz.

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