Suppose we have a table named "Books" with the following structure:Book ID Title Author Genre1 The Great Gatsby F. Scott Fitzgerald, Orwell Fiction, Dystopian2 Pride and Prejudice Jane Austen Romance, Thriller3 The Catcher in the Rye J.D. Salinger Fiction, SuspenseAnswer the following questionsQuestion 1This table violates 1NF because:The "Author" column contains multiple values (multiple authors) in the same cell.The "Genre" column contains multiple values (multiple genres) in the same cell.Both a and bTable is in 1NF only
Question
Suppose we have a table named "Books" with the following structure:Book ID Title Author Genre1 The Great Gatsby F. Scott Fitzgerald, Orwell Fiction, Dystopian2 Pride and Prejudice Jane Austen Romance, Thriller3 The Catcher in the Rye J.D. Salinger Fiction, SuspenseAnswer the following questionsQuestion 1This table violates 1NF because:The "Author" column contains multiple values (multiple authors) in the same cell.The "Genre" column contains multiple values (multiple genres) in the same cell.Both a and bTable is in 1NF only
Solution
The table violates 1NF because of both a and b. The "Author" column and the "Genre" column both contain multiple values in the same cell. According to the rules of the First Normal Form (1NF), each column in a table should contain only atomic (indivisible) values, and each cell in a table should contain only one value from the set of values that correspond to that column. Therefore, having multiple authors in the "Author" column and multiple genres in the "Genre" column violates these rules.
Similar Questions
Suppose we have a table named "Books" with the following structure:Book ID Title Author Genre1 The Great Gatsby F. Scott Fitzgerald, Orwell Fiction, Dystopian2 Pride and Prejudice Jane Austen Romance, Thriller3 The Catcher in the Rye J.D. Salinger Fiction, SuspenseAnswer the following questionsQuestion 1Question 2Question 3Following the first step, what is the final step to achieve 1NF for the "Books" table?Combine multiple titles into a single columnRemove the Author columnSeparate genres into individual rowsRemove the Title columnSave
Suppose we have a table named "Books" with the following structure:Book ID Title Author Genre1 The Great Gatsby F. Scott Fitzgerald, Orwell Fiction, Dystopian2 Pride and Prejudice Jane Austen Romance, Thriller3 The Catcher in the Rye J.D. Salinger Fiction, SuspenseAnswer the following questionsQuestion 1Question 2What is the first step to normalize the "Books" table into 1NF?Separate authors into individual rowsRemove the Genre columnCombine multiple titles into a single columnRemove the Author columnSave
Suppose we have the following structure for the "Orders" table:Order ID Customer Name Order Details1001 John Doe Laptop, Monitor, Mouse, Keyboard1004 Jane Smith Smartphone, Tablet, Headphones1003 Alice Brown Chair, Desk, Lamp, Bookshelf, Coffee Table1002 Alice Brown NULLAnswer the following questionsQuestion 1This table violates 1NF because:The "Customer Name" column contains duplicate valuesThe "Order Details" column contains multiple values (multiple order details) in the same cell.The "Order Details" column contains NULL valuesOrder is not maintained in the column "Order ID"All of theseSave
uppose we have the following structure for the "Orders" table:Order ID Customer Name Order Details1001 John Doe Laptop, Monitor, Mouse, Keyboard1004 Jane Smith Smartphone, Tablet, Headphones1003 Alice Brown Chair, Desk, Lamp, Bookshelf, Coffee Table1002 Alice Brown NULLAnswer the following questionsQuestion 1This table violates 1NF because:The "Customer Name" column contains duplicate valuesThe "Order Details" column contains multiple values (multiple order details) in the same cell.The "Order Details" column contains NULL values
Why is it important for every column in a table to have a unique name in 1NF?To prevent data inconsistencyTo ensure data redundancyTo avoid confusion during data retrieval and manipulationTo facilitate data compression
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