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Relational databases

Quiz by Alex Ivanov

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10 questions
Show answers
  • Q1
    Which of the following best describes a 'primary key' in a relational database?
    A value that changes frequently
    A column that can contain duplicate values
    A unique identifier for each record in a table
    A type of database operation
    30s
  • Q2
    What is the primary purpose of a relational database?
    To send emails and messages
    To store only text documents
    To store and manage data in tables that can be linked together
    To create graphics and images
    30s
  • Q3
    Which of the following is a key feature of relational databases?
    The use of primary and foreign keys to establish relationships
    Being unable to handle large amounts of data
    Storing data as unstructured files
    Requiring no schema to organize data
    30s
  • Q4
    What does SQL stand for in the context of relational databases?
    Sequential Query Language
    Standard Query Language
    Simple Query Language
    Structured Query Language
    30s
  • Q5
    What is a 'table' in a relational database?
    A collection of related data organized in rows and columns
    A single data entry
    A visual representation of data
    An error message in the database
    30s
  • Q6
    What does a 'foreign key' in a relational database do?
    Serves as a primary identifier for each row
    Stores an image of the database table
    Acts as a backup key for data security
    Links two tables together by referencing a primary key in another table
    30s
  • Q7
    What is the function of a 'join' in SQL?
    To create a new database schema
    To delete records from a table
    To add new columns to a table
    To combine records from two or more tables based on related fields
    30s
  • Q8
    Which of the following statements is true about relational databases?
    They require a predefined schema to define the structure of the data
    They automatically determine data relationships without a schema
    They can only store numeric data
    They do not support queries
    30s
  • Q9
    What is the purpose of normalization in a relational database?
    To reduce data redundancy and ensure data integrity
    To enhance the graphical interface of the database
    To encrypt data for security
    To increase data storage capacity
    30s
  • Q10
    Which of the following is an example of a relational database management system (RDBMS)?
    Microsoft Word
    MySQL
    HTML
    Photoshop
    30s

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