Test your basic knowledge |

Oracle SQL

Subjects : oracle, it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What does SQL stand for?






2. A _____ is a query definition stored in the database that looks just like a table - but does not have any physical rows






3. Which one of the following string functions tells you how many characters are in a string?






4. When column names on the tables are different - you use the ______ condition.






5. You use the _________ keyword to add columns or constraints to a table.






6. The ALTER SESSION statement can change the session's...






7. Explain the differences in how an ANSI Full Outer Join and a Full Outer Join using the UNION Operator work






8. LINESIZE






9. The query retrieves more than 5 to 15 percent of the rows






10. The __________ operator is inclusive of the two values specified.






11. The term ____________ ___________ is used to express a join that satisfies the join condition.






12. List the steps performed by a correlated subquery.






13. The ________________ is a type of statement whereby you retrieve data that exists in one table - but not in another.






14. Subqueries can return...






15. SQL*Plus is used more than SQL Developer when you need to...






16. PAGESIZE






17. Dynamic views begin with a ___________.






18. The ______ operator compares a list of values for equivalency






19. The time zone displacement value indicates the time difference from _______.






20. When returning multiple rows - a subquery must contain the _____ - _____ - _____ - or ______ operator - otherwise Oracle will return an error






21. Write a solution that adds 20 minutes to a given date.






22. The ___________ operator tests whether a matching row cannot be found.






23. When using the following data: NUMBER(10 -4) - the # 10 is called the __________.






24. It is always good practice to include the old values in the WHERE clause of UPDATE to ensure that another session or user _________________ in the meantime.






25. When writing an ANSI outer join - the keywords _________ OUTER and _________ OUTER are added to the __________ keyword to indicate the rows from which table to use.






26. When disabling a unique or primary key - you can keep the index if you specify the __________________ clause in the ALTER TABLE statement.






27. When writing the syntax for finding information on three or more tables - the parenthesis around the ON clause is...






28. ___________ subqueries allow you to reference columns from the outer query and execute the inner query repeatedly






29. Match each of the SQL commands on the left with a verb from the list.






30. If a graphical representation of a table's box has __________ it means that the relationship is identifying.






31. You use the __________ keyword to change characteristics of a column.






32. The Nonequijoin can use the ________________ operator to construct joins that are not based on equality of values.






33. In SQL Developer field names and table names are shown in the color _______.






34. When using the following data: NUMBER(10 -4) - the # 4 is called the __________.






35. When you have issued a DELETE command - you can still ________ those rows and restore the information.






36. Write a statement that drops the index need_to_pass_i






37. What is the first column of a composite index called?






38. Explain what a static data dictionary view is and how it is used






39. What is the keyboard shortcut for the ROLLBACK command?






40. Explain what is found in the All Objects report folder in SQL Developer






41. The _______ operator determines common rows.






42. The ____________ keywords and the USING clause of the ANSI join syntax are mutually exclusive.






43. What is the data type you can use if you need an unlimited number of textual characters?






44. To restart a sequence at a lower number - you can drop and ________ the sequence.






45. ____________ are useful for analyzing and exploring the relationships within your data






46. The RTRIM function is useful for eliminating ________ in a string.






47. SQL Developer provides an extensive list of useful reports and offers the capability to create your own...






48. Checks whether any value in the list makes the condition true.






49. You can pass parameters from the operating system when ___________ in SQl*Plus






50. The _______ function adds values together for a group of rows.