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Data Modeling with ERD Quiz
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Data Modeling with ERD Quiz

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Questions and Answers

What is the aim of the data modeling phase?

  • To describe the relationships between data items
  • To depict the constraints on data
  • To capture important concepts and rules visually (correct)
  • To design the physical database
  • What is the process of capturing important concepts and rules visually in a diagram called?

  • Data visualization
  • Database development
  • Data modeling (correct)
  • Entity-Relationship Diagram (ERD) construction
  • Which type of model is the first stage and provides a high-level picture of database design?

  • Relational model
  • Flat file model
  • Object-oriented model
  • Hierarchical model (correct)
  • What are some common types of database models?

    <p>Hierarchical model and network model</p> Signup and view all the answers

    What is the main purpose of an Entity-Relationship Diagram (ERD)?

    <p>To diagram the association of data</p> Signup and view all the answers

    Study Notes

    Data Modeling Phase

    • Aims to identify and organize data structures and relationships to support business processes and requirements

    Data Modeling Techniques

    • Capturing important concepts and rules visually in a diagram is called data modeling or conceptual modeling

    Database Design

    • The first stage of database design is the Conceptual Data Model, which provides a high-level picture of the database design
    • Common types of database models include:
      • Conceptual Data Model
      • Logical Data Model
      • Physical Data Model

    Entity-Relationship Diagram (ERD)

    • The main purpose of an ERD is to graphically represent the structure of a database, depicting entities, attributes, and relationships

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    Description

    Test your knowledge of data modeling using Entity-Relationship Diagrams (ERD). This quiz covers key terms such as Entity and Attributes, as well as concepts like Relationships and Cardinality Constraints. You will also assess your ability to construct ER diagrams based on given scenarios.

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