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






2. A transaction is a...






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






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






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






6. The same function can be used ______ in a SELECT statement.






7. When you want to run a script in either SQL*Plus or SQL Developer - you can use a ______ or the _________ command.






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






9. Another name for a data dictionary view is __________________ or _________________.






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






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






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






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






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






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






16. List the different types of data dictionary views.






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






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






19. Users can only see changes made to a database once they have been...






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






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






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






23. In a view you can give a column a different name than it has in the...






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






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






26. SELECT * FROM instructor ORDER BY phone






27. 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


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






29. List the steps performed by a correlated subquery.






30. You can __________ DISTINCT and a GROUP BY clause in the same SELECT statement.






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






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






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






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






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






36. Joins involving multiple columns must always follow the ____________ relationship path.






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






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






39. What are the main components of a ROWID?






40. 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.






41. The ____________ command makes changes permanent.






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






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






44. Subqueries can return...






45. What is the syntax used to indicate that you are using the Oracle Outer Join operator?






46. Explain how Substitution Variables are used when writing scripts.






47. List 4 aggregate functions






48. _________ rows are not allowed in the relational model.






49. _________ and __________ functions are opposites of each other and provide a value in a group of rows.






50. When is it not a good idea to use an index?







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