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. Write a statement for SQL*Plus that shows the dictionary.






2. The ________ operator cannot compare against a list of values.






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






4. Returns rows if the condition is true for all the values in the list






5. What is the Oracle data dictionary called that contains a set of tables and views containing the data about the database?






6. _________________ relationships are always optional relationships.






7. 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.






8. UNION ALL does not sort - therefore it is less time consuming to use than the...






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






10. SQL Developer's ____________________ option allows you to selectively export certain rows and columns.






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






12. Subqueries can return...






13. What are the main components of a ROWID?






14. PAGESIZE






15. Oracle uses the outer join operator to indicate that nulls are shown for...






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






17. Explain Flashback queries and how they are used. Give an example of a FLASHBACK_TRANSACTION query and explain what it does row by row.

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






19. What is the most common DATE format found in SQL?






20. Explain how you can optimize your queries with subqueries and the main advantage of doing so.






21. How many characters can you have using the VARCHAR data type?






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






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






24. Information that is returned after you run your statement are found in the __________ tab in SQL Developer.






25. SELECT * FROM instructor ORDER BY phone






26. You can use the ________________ to subtract months from a given date.






27. What does SQL stand for?






28. The NEXTVAL and CURRVAL pseudocolumns can be used in which of the following SQL constructs? Select all that apply.






29. What is the command you would type into SQL*Plus if you needed to know the definition for each column of a table?






30. The key that most database designers prefer and is chosen by the system is the _____________ key.






31. Explain how Dynamic SQL is used and give an example of a Dynamic SQL statement.






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






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






34. To equijoin a table with another table involves matching the...






35. Explicit data type conversion is preferable to Oracle's...






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






37. When using the data NUMBER(10 -4) there will be _______ digits following the decimal point.






38. Write the syntax to rename index just_two_more_weeks_i to finally_i






39. 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.






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






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






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






43. What is the maximum value for a column defined as NUMBER(4 -2)?






44. It is considered good form to put all SQL commands in...






45. Converting a text literal to DATE format requires the use of the...






46. The DUAL table can be used for...






47. The _______ function lets you perform if-then-else functionality with the SQL language.






48. When using the following data: NUMBER(10 -4) - the lowest number you can possibly have is __________.






49. A _________ subquery returns a single column with a single row






50. To join four tables - you must have at least _____ join conditions.







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