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. In Oracle, what does the term "DDL" stand for? Data Definition Language Data Description Language Database Definition Language Database Description Language2. 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 table3. 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 set4. Which function is used to find the minimum value in a column in Oracle? MIN AVG MAX SUM5. 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 subquery6. 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. 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 rows8. What does DML stand for in the context of Oracle? Data Manipulation Language Database Modification Language Data Modeling Language Database Management Language9. Which data type is used to store variable-length character strings in Oracle? CHAR VARCHAR CLOB BLOB10. Which statement is used to add a new column to an existing table in Oracle? ADD COLUMN CREATE COLUMN ALTER TABLE ADD COLUMN INSERT COLUMN11. 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 column12. 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 condition13. 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 tables14. 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 tables15. 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 point16. 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 condition17. What does SQL stand for? Structured Language Standard Query Language System Query Language Sequential Query Language18. 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 query19. 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 key20. Which SQL function is used to find the average value in a column in Oracle? AVG SUM MIN MAX5 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