The SQL Procedure: Trivia Quiz

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The SQL Procedure: Trivia Quiz - Quiz

There are different types of Stored Procedure in SQL server and we got to cover all of them in our previous classes. SQL is used to communicate with a database in a computer to accomplish a task. Take up the quiz below and get to see how well you understood the procedures used in this structured query languages. All the best!


Questions and Answers
  • 1. 

    A query that joins a table to itself

    • A.

      Outer join

    • B.

      Self-join

    • C.

      Inner join

    Correct Answer
    B. Self-join
    Explanation
    A self-join is a type of query where a table is joined with itself. This is done by creating two instances of the same table and then joining them based on a common column. It is often used when there is a need to compare records within the same table. In a self-join, each instance of the table is treated as a separate entity, allowing for comparisons and analysis between the two.

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  • 2. 

    Built-in functions that return a single result for each row of data retrieved 

    • A.

      Single-row functions

    • B.

      Search condition

    • C.

      Table alias

    Correct Answer
    A. Single-row functions
    Explanation
    Single-row functions are built-in functions that operate on a single row of data at a time and return a single result for each row. These functions can be used to manipulate data values within a query, perform calculations, or apply transformations to the data. Examples of single-row functions include mathematical functions (such as ABS or ROUND), string functions (such as SUBSTR or CONCAT), and date functions (such as TO_CHAR or MONTH). By applying single-row functions to the retrieved data, we can modify or format the values as needed before displaying or using them further.

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  • 3. 

    Contains current date and time 

    • A.

      Single-row functions

    • B.

      Savepoint

    • C.

      SYSDATE pseudocolumn

    Correct Answer
    C. SYSDATE pseudocolumn
    Explanation
    The SYSDATE pseudocolumn is a single-row function that returns the current date and time. It can be used in SQL queries to retrieve the current date and time and perform calculations or comparisons based on it.

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  • 4. 

    An alternative name that you assign to the table in the query’s FROM clause 

    • A.

      Query

    • B.

      Table alias

    • C.

      Single-row functions

    Correct Answer
    B. Table alias
    Explanation
    A table alias is an alternative name that you assign to a table in a query's FROM clause. This allows you to refer to the table using a shorter or more meaningful name within the query. Table aliases are especially useful when you need to join multiple tables in a query, as they help to clarify which table each column belongs to. By using table aliases, you can make your query more concise and easier to read and understand.

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  • 5. 

    A series of action queries that represent a logical unit of work 

    • A.

      Query

    • B.

      Single Row Function

    • C.

      Transaction

    Correct Answer
    C. Transaction
    Explanation
    The correct answer is "Transaction" because a transaction is a series of action queries that represent a logical unit of work. In a transaction, multiple queries are executed together as a single unit, ensuring that either all the queries are successfully executed or none of them are executed. This helps maintain data integrity and consistency in the database.

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  • 6. 

    Removes all of a table’s data without saving any rollback information

    • A.

      Roll Back

    • B.

      Truncate

    • C.

      Single-row functions

    Correct Answer
    B. Truncate
    Explanation
    Truncate is the correct answer because it removes all of a table's data without saving any rollback information. Unlike the delete statement, which can be rolled back, truncate cannot be undone. It is a faster and more efficient way to remove all data from a table when rollback is not necessary.

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 31, 2009
    Quiz Created by
    Roadman19771

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