Welcome to CHOOLS ORACLE ASSESSMENT (YOU HAVE ONLY 30 MINUTES TO COMPLETE THIS PART [20 Questions]) **** Wishing You All The Best **** Instructions : To start the quiz, please provide your name, email id and phone number. All questions are mandatory* Answering each question is required before going on to the next page of questions. Your response is subject to change at any time. After completed the quiz click the submit button. If, once the time is up, it will be automatically submitted. The report will be mailed to your email address after the quiz is finished. 1. Which statement is used to update data in a table in Oracle? CHANGE MODIFY UPDATE ALTER2. What is the purpose of the UNION ALL operator in Oracle? To combine the result sets of two or more SELECT statements To join tables based on a condition To filter rows in a query To exclude duplicate rows from the result set3. What is the purpose of the EXISTS operator in Oracle? To check if a table exists in the database To check if a column exists in a table To check if a value exists in a column To check if a subquery returns any rows4. What is the purpose of the OUTER JOIN in Oracle? To exclude rows that do not meet the condition To include only rows that meet the condition To include all rows from both tables, even if there is no match To filter rows based on a condition5. In Oracle, what does the term "DDL" stand for? Data Definition Language Data Description Language Database Definition Language Database Description Language6. What does DML stand for in the context of Oracle? Data Manipulation Language Database Modification Language Data Modeling Language Database Management Language7. What is the purpose of the ORDER BY clause in Oracle? To filter rows in a query To sort the result set To group rows based on a column To join tables8. In Oracle, what is the purpose of the SELECT statement? To update records To retrieve data To delete records To insert records9. In Oracle, what does the acronym PL/SQL stand for? Procedural Language/Structured Query Language Programming Language/Standard Query Language Procedure Language/Structured Question Language Procedural Logic/Structured Query Language10. In Oracle, what is the purpose of the SAVEPOINT statement? To undo changes made by the current transaction To create a checkpoint within a transaction To commit the current transaction To create a subquery11. In Oracle, what is the purpose of the COMMIT statement? To undo changes made by the current transaction To permanently delete data from a table To commit the current transaction To create a savepoint12. What is the purpose of the ROWID in Oracle? To uniquely identify a row in a table To store the row count in a table To specify the order of the result set To create a primary key13. What is the purpose of the INDEX in Oracle? To define a unique constraint To enforce referential integrity To improve query performance To create a virtual column14. What is the purpose of the HAVING clause in Oracle? To filter rows in a query To filter columns in a query To filter groups in a query To filter results based on a condition15. What does SQL stand for? Structured Language Standard Query Language System Query Language Sequential Query Language16. What is the default sorting order in an ORDER BY clause in Oracle? Descending Ascending Random Alphabetical17. What is the purpose of the WHERE clause in a SQL query? To specify the order of the result set To filter the rows returned by a query To join tables To group rows based on a column18. What is the purpose of the GROUP BY clause in Oracle? To filter rows in a query To sort the result set To group rows based on a column To join tables19. Which statement is used to add a new column to an existing table in Oracle? ADD COLUMN CREATE COLUMN ALTER TABLE ADD COLUMN INSERT COLUMN20. In Oracle, which operator is used to combine the result sets of two or more SELECT statements? UNION JOIN CONCAT MERGE5 out of 4Time is Up!
