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Nornalizzazione basi di dati relazionali

Quiz by FrancoChiavetta

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9 questions
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  • Q1
    What is normalization in relational database?
    Randomly arranging data without any specific structure.
    Storing data in a single table without any relationship.
    Organizing data to minimize redundancy and dependency.
    Duplicating data in multiple tables for easier access.
    30s
  • Q2
    What is a primary key in a relational database?
    A field that contains multiple values for each record.
    A table that stores the metadata of the database.
    A query used to combine data from multiple tables.
    A unique identifier for each record in a table.
    30s
  • Q3
    What is the purpose of database normalization?
    To store data in a single table without any organization.
    To increase data redundancy and improve performance.
    To randomly arrange data in a database.
    To eliminate data redundancy and increase data integrity.
    30s
  • Q4
    What is the First Normal Form (1NF)?
    Combining multiple tables into a single table for increased performance.
    Breaking a single table into multiple tables for better organization.
    Removing all relationships between tables for easier management.
    Ensuring atomicity of data by eliminating repeating groups.
    30s
  • Q5
    What is the purpose of foreign keys in a relational database?
    To store data in a single table.
    To combine data from multiple tables.
    To create duplicate entries in a table.
    To establish relationships between tables.
    30s
  • Q6
    What is the Second Normal Form (2NF) in database normalization?
    Combining multiple tables into a single table for increased performance.
    Removing all relationships between tables for easier management.
    Ensuring non-key attributes depend on the entire primary key.
    Breaking a single table into multiple tables for better organization.
    30s
  • Q7
    What is the Third Normal Form (3NF) in database normalization?
    Removing all relationships between tables for easier management.
    Ensuring non-key attributes do not depend on other non-key attributes.
    Breaking a single table into multiple tables for better organization.
    Combining multiple tables into a single table for increased performance.
    30s
  • Q8
    What is a composite key in a relational database?
    A key that consists of two or more columns.
    A single column used as a primary key.
    A unique identifier for each record in a table.
    A foreign key referencing another table.
    30s
  • Q9
    What is the purpose of referential integrity in a relational database?
    To randomly arrange data in a database for increased performance.
    To store data in a single table without any organization.
    To maintain consistency and relationships between related tables.
    To eliminate data redundancy and increase data integrity.
    30s

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