How Well Do You Know Your Data And Modelling?

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How Well Do You Know Your Data And Modelling? - Quiz

An abstract model that organizes elements of data and standardizes how they relate to one another and to properties of the real world entities. Take this quiz to tell us how well you know your data and modelling.


Questions and Answers
  • 1. 

    The term data model is used in two distinct but closely related senses. which of these two?

    • A. 

      Geometry and formalization

    • B. 

      Relationships and geometry

    • C. 

      Abstract formalization and relationships.

    • D. 

      None of the above

    Correct Answer
    C. Abstract formalization and relationships.
    Explanation
    The term "data model" is used to refer to the abstract formalization and relationships within a database. It involves the process of organizing and structuring data in a way that allows for efficient storage, retrieval, and manipulation. This includes defining the entities, attributes, and relationships between them. The other options, such as geometry and formalization or relationships and geometry, do not accurately capture the essence of what a data model represents.

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  • 2. 

    Modelling may refer to which of the following?

    • A. 

      Scientific model, a simplified and idealized understanding of physical systems

    • B. 

      Physical model or plastic model, a physical representation in three dimensions of an object, such as a globe or model airplane

    • C. 

      Conceptual model, a representation of a system using general rules and concepts

    • D. 

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    The correct answer is "All of the above" because modelling can refer to all three types mentioned in the options. A scientific model is a simplified understanding of physical systems used to study and analyze them. A physical model is a three-dimensional representation of an object, often used for demonstration or testing purposes. A conceptual model is a representation of a system using general rules and concepts, typically used for understanding and communication purposes. Therefore, all three types fall under the umbrella of modelling.

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  • 3. 

    What is the main aim Data models?

    • A. 

      The main aim of data models is analyze information by providing the definition and format of data.

    • B. 

      The main aim of data models is to restructure information systems.

    • C. 

      The main aim of data models is to support the development of information systems by providing the definition and format of data.

    • D. 

      None of the above

    Correct Answer
    C. The main aim of data models is to support the development of information systems by providing the definition and format of data.
    Explanation
    The main aim of data models is to support the development of information systems by providing the definition and format of data. Data models are used to organize and structure data in a way that can be easily understood and utilized by information systems. They provide a blueprint for how data should be stored, organized, and accessed within a system. By defining the structure and format of data, data models help ensure consistency, accuracy, and efficiency in information systems.

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  • 4. 

    According to ANSI, data models is allows the ______ perspectives.

    • A. 

      Two

    • B. 

      Four

    • C. 

      Five

    • D. 

      Three

    Correct Answer
    D. Three
    Explanation
    According to ANSI, data models allow for three perspectives.

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  • 5. 

    One of the earliest pioneering works in modelling information system was done by who?

    • A. 

      Charles Darwin

    • B. 

      Young and Kent

    • C. 

      Boyles and Kent

    • D. 

      Elon Musk

    Correct Answer
    B. Young and Kent
    Explanation
    Young and Kent were one of the earliest pioneers in modelling information systems. They conducted groundbreaking work in this field, which laid the foundation for future developments. Charles Darwin is not relevant to this topic as he is known for his work in the field of biology. Boyles and Kent are not associated with pioneering work in modelling information systems. Elon Musk, while a prominent figure in technology and innovation, is not connected to the early development of information system modelling.

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  • 6. 

    The earliest pioneering works in modelling information system was done in?

    • A. 

      1958

    • B. 

      1999

    • C. 

      1934

    • D. 

      1993

    Correct Answer
    A. 1958
  • 7. 

    How many type of Data models are there?

    • A. 

      6 models

    • B. 

      7 models

    • C. 

      8 models

    • D. 

      9 models

    Correct Answer
    A. 6 models
    Explanation
    There are six types of data models.

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  • 8. 

    Which of this is not a common model in Database model?

    • A. 

      Star schema

    • B. 

      Polar model

    • C. 

      Network model

    • D. 

      Relational model

    Correct Answer
    B. Polar model
    Explanation
    The polar model is not a common model in database modeling. The star schema, network model, and relational model are all widely used in database design and management. However, the polar model is not commonly used in database systems.

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  • 9. 

    Which of the following  is a specification describing how a database is structured and used?

    • A. 

      Data structure diagram

    • B. 

      Semantic data model

    • C. 

      Generic model model

    • D. 

      Database model

    Correct Answer
    D. Database model
    Explanation
    A database model is a specification that describes how a database is structured and used. It defines the logical and physical structure of the database, including the tables, relationships, constraints, and rules for data manipulation. It serves as a blueprint for designing and implementing a database system, providing a framework for organizing and storing data efficiently. A database model helps ensure data integrity, consistency, and security, and allows for efficient data retrieval and manipulation. It is an essential component of database management systems and is used by database administrators and developers to design and maintain databases.

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  • 10. 

    Which of the following  is the design of data for use in defining the target state and the subsequent planning needed to hit the target state?

    • A. 

      Data architecture

    • B. 

      Data structure

    • C. 

      Data modelling

    • D. 

      Pattern

    Correct Answer
    A. Data architecture
    Explanation
    Data architecture refers to the design and organization of data for a specific purpose, in this case, defining the target state and planning to achieve it. It involves creating a blueprint that outlines how data will be stored, accessed, and managed within an organization. This includes defining data structures, data models, and data flows to ensure that the data supports the goals and objectives of the organization. Therefore, data architecture is the correct answer as it encompasses the design of data for use in defining the target state and subsequent planning.

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