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






2. What does the following function return? SELECT LENGTH(NULL) - FROM dual






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






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






5. What is the main difference between the NOT EXISTS and the NOT IN operators?






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






7. List the reasons that a subquery could not be unnested.






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






9. Self-joins are useful for performing comparisons and checking for ___________ in data.






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






11. A join across three tables can be expressed with the ________ join syntax.






12. When you create a report in SQL Developer all the column names must match identically the names of the columns found in the tables you are referencing.






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






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






15. The COUNT function uses the __________ wildcard.






16. The ____________ command makes changes permanent.






17. What do views do that makes them so useful for security?






18. What is Oracle's most popular index storage structure?






19. What is the tab in SQL Developer where data dictionary view information can be found?






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






21. You can simplify the writing of SQL statements by writing SQL _________ that generate and execute other SQL statements.






22. The ____________ icon allows you to execute multiple statements and emulates SQL *Plus as much as possible.






23. SELECT * FROM instructor ORDER BY phone






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






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






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






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






28. When you run a script in SQL*Plus you must give the...






29. What is the name of the key automatically generated from a sequence?






30. The focus of the logical data model is _____________






31. The TIMESTAMP WITH LOCAL TIME ZONE data type allows...






32. Explain how the SPOOL command is used and what program it can be used in.






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






34. The data type definitions NUMBER(10) and NUMBER(10 -0) are the...






35. List 4 aggregate functions






36. The _______ operator determines common rows.






37. What is the name of the view where you can find the collection of static and data dictionary tables and views - along with their descriptions?






38. List the steps performed by a correlated subquery.






39. The purpose of the HAVING clause is to eliminate___________.






40. Write the syntax to rename index just_two_more_weeks_i to finally_i






41. Comparison operators can compare multiple _________________.






42. Queries that are found in parentheses are done first - just as in the order of operations when doing...






43. The COUNT function is useful for determining whether a table has...






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






45. The TRUNC function on a date without a format model truncates the timestamp to...






46. FEEDBACK






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






48. To revert back to a state that happened before you ran your change statement - you issue a ____________ command.






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






50. All SQL statements contained within a script must end with a _______________ - even if they are done in SQL Developer.







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:



Major Subjects



Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Most popular tests