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 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 key3. In Oracle, what does the term "DDL" stand for? Data Definition Language Data Description Language Database Definition Language Database Description Language4. Which statement is used to remove a table from the database in Oracle? REMOVE TABLE DELETE TABLE DROP TABLE ERASE TABLE5. Which SQL function is used to find the average value in a column in Oracle? AVG SUM MIN MAX6. 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 column7. Which keyword is used to create an alias for a table or a column in Oracle? AS ALIAS NAME RENAME8. 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 condition9. Which function is used to find the total number of rows in a table in Oracle? COUNT SUM AVG MAX10. Which function is used to convert a character string to uppercase in Oracle? UPPER LOWER INITCAP UCASE11. Which function is used to find the minimum value in a column in Oracle? MIN AVG MAX SUM12. Which clause is used to sort the result set in descending order in Oracle? DESC ORDER DESC SORT DESC DESCENDING13. Which SQL operator is used for pattern matching in Oracle? LIKE IN BETWEEN EXISTS14. 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 set15. What is the default sorting order in an ORDER BY clause in Oracle? Descending Ascending Random Alphabetical16. 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 subquery17. Which statement is used to grant privileges to a user in Oracle? ALLOW GRANT GIVE PERMISSION18. In Oracle, which operator is used to combine the result sets of two or more SELECT statements? UNION JOIN CONCAT MERGE19. What is the purpose of the CASE statement in Oracle? To define a loop in PL/SQL To handle exceptions To create a virtual column To perform conditional logic in a query20. What does SQL stand for? Structured Language Standard Query Language System Query Language Sequential Query Language5 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
