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






2. The _____________ clause determines how rows are grouped.






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






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






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






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






7. LINESIZE






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






9. List the different types of data dictionary views.






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






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






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






13. Write the syntax to rename index just_two_more_weeks_i to finally_i






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






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






16. A calculation with a null always yields...






17. An outer join includes the result rows returned by an __________ plus extra rows where no matches are found.






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






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






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






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






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






23. SELECT * FROM instructor ORDER BY phone






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






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






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






27. Explain the steps needed to run a script in SQL Developer






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






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






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






31. How many characters can be stored in the CHAR column/field?






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






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






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






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






36. 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.






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






38. The ______ depicts the M of a 1:M relationship.

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






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






41. 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?






42. __________________ inserts the current date and time.






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






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






45. The ____________ clause on a CREATE TABLE statement can specify how much space to allocate.






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






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






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






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






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