Oracle Nihileswaran No Comment 10Feb Share 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. What is the purpose of the NVL function in Oracle? To convert a value to uppercase To replace NULL with a specified value To concatenate two strings To find the length of a string2. What is the default sorting order in an ORDER BY clause in Oracle? Descending Ascending Random Alphabetical3. What is the purpose of the TRUNCATE statement in Oracle? To delete all rows from a table To remove a table from the database To empty a table without logging individual row deletions To drop a column from a table4. Which statement is used to remove a table from the database in Oracle? REMOVE TABLE DELETE TABLE DROP TABLE ERASE TABLE5. 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 savepoint6. Which statement is used to grant privileges to a user in Oracle? ALLOW GRANT GIVE PERMISSION7. Which statement is used to add a new column to an existing table in Oracle? ADD COLUMN CREATE COLUMN ALTER TABLE ADD COLUMN INSERT COLUMN8. What does SQL stand for? Structured Language Standard Query Language System Query Language Sequential Query Language9. Which SQL function is used to find the highest value in a column in Oracle? SUM MIN AVG MAX10. Which function is used to convert a character string to uppercase in Oracle? UPPER LOWER INITCAP UCASE11. 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 subquery12. In Oracle, what is a primary key used for? To enforce uniqueness in a column To establish relationships between tables To provide a default value for a column To sort the result set13. 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 rows14. 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 key15. Which clause is used to sort the result set in descending order in Oracle? DESC ORDER DESC SORT DESC DESCENDING16. What is the purpose of the ROLLBACK statement in Oracle? To undo changes made by the current transaction To permanently delete data from a table To commit the current transaction To create a save point17. In Oracle, what is a foreign key used for? To enforce uniqueness in a column To establish relationships between tables To provide a default value for a column To sort the result set18. Which SQL function is used to find the average value in a column in Oracle? AVG SUM MIN MAX19. What does DML stand for in the context of Oracle? Data Manipulation Language Database Modification Language Data Modeling Language Database Management Language20. 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 condition5 out of 4Time is Up! Previous Postgre SQL February 10, 2024 Next Bootstrap February 10, 2024 You Might Also Like Hello world CHOOLS No Comment How to Disable Avast Antivirus CHOOLS No Comment AVG Review — Is the Absolutely free Version As effective as the Premium Version? CHOOLS No Comment Understanding the Limitations of Models of Managing CHOOLS No Comment Careers Similar To Teaching CHOOLS No Comment
