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Normalisation

Quiz by Mr Graham

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7 questions
Show answers
  • Q1
    What is the primary purpose of normalization in database management?
    To simplify SQL queries
    To improve database security
    To increase data redundancy
    To eliminate data redundancy
    30s
  • Q2
    What is the goal of achieving Third Normal Form (3NF) in database design?
    To combine multiple tables into one
    To eliminate transitive dependencies
    To achieve a flat file structure
    To allow duplicate data
    30s
  • Q3
    Which of the following describes the First Normal Form (1NF)?
    Each table must be related to at least one other table
    No multivalued attributes are allowed
    Each column must contain atomic values
    Tables must have a primary key
    30s
  • Q4
    Which of the following is a characteristic of the Second Normal Form (2NF)?
    No attributes can be null
    All attributes must be unique
    No non-prime attribute is partially dependent on any candidate key
    All attributes must be dependent on the primary key
    30s
  • Q5
    What is a common result of applying normalization to a database?
    Slower query performance
    Reduced data security
    Improved data consistency and integrity
    Increased data duplication
    30s
  • Q6
    In the process of normalization, what does it mean for a relation to be in Second Normal Form (2NF)?
    It has no duplicated rows
    It is in First Normal Form and all non-key attributes are fully functionally dependent on the primary key
    It must have only one primary key
    It eliminates all null values from the table
    30s
  • Q7
    Which type of dependency must be removed to achieve Second Normal Form (2NF)?
    Multivalued dependency
    Functional dependency
    Partial dependency
    Transitive dependency
    30s

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