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databases Online Quiz - 234

Description: databases Online Quiz - 234
Number of Questions: 20
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Tags: databases
Attempted 0/20 Correct 0 Score 0
  1. SELECT TO_CHAR(2000, '$#,###.##') from dual

  2. SELECT TO_CHAR(2000, '$0,000.00') from dual

  3. SELECT TO_CHAR(2000, '$9,999.00') from dual

  4. SELECT TO_CHAR(2000, '$9,999.99') from dual

  5. SELECT TO_CHAR(2000, '$2,000.00') FROM dual;

  6. SELECT TO_CHAR(2000, '$N,NNN.NN') FROM dual;


Correct Option: B,C,D
  1. It returns a single result row based on single rows

  2. It returns a single result row based on groups of rows

  3. It can only appear in ORDER BY clauses

  4. It cannot appear in select lists


Correct Option: B
  1. SELECT ABS(-33) "Absolute" FROM DUAL;

  2. SELECT ABS(-33), Absolute FROM DUAL;

  3. SELECT ABS("-33") Absolute FROM DUAL;

  4. None of these


Correct Option: A
  1. it has a syntax error, the AVG clause is not valid

  2. it calculates the average of the maximum salaries of all the departments

  3. it has a syntax error, the MAX clause is not valid

  4. it has no error, but the GROUP BY clause is not effective


Correct Option: B
  1. COMMIT

  2. MERGE

  3. UPDATE

  4. DELETE

  5. CREATE

  6. DROP


Correct Option: A,B,C,D
  1. a) DELCARE and BEGIN

  2. b) DECALRE and EXCEPTION

  3. c) EXCEPTION and END

  4. d) BEGIN and END


Correct Option: A,B
  1. a) A stored procedure on the server.

  2. b) A block of code in a PL/SQL library.

  3. c) A standalone procedure on the client machine.

  4. d) A block of code in the body of the program unit ORDERTOTAL.

  5. e) A local subprogram defined within the program unit ORDERTOTAL.


Correct Option: E

Which is the procedure used to issue User-Defined error messages from stored Sub-Programs?

  1. a) Raise Application procedure

  2. b) Raise Application Error procedure

  3. c) Application Error procedure

  4. d) None of the Above


Correct Option: B
  1. SELECT *

  2. FROM emp

  3. WHERE comm = NULL

  4. There is no error in this statement.


Correct Option: D
  1. Examine this procedure: CREATE OR REPLACE PROCEDURE DELETE_PLAYER(V_IDIN NUMBER) IS BEGIN DELETE FROM PLAYER WHERE ID = V_ID EXCEPTION WHEN STATS_EXIST_EXCEPTION THEN DBMS_OUTPUT.PUT_LINE(Cannotdeletethisplayer, childrecordsexistin PLAYER_BAT_STAT table); END; What prevents this procedure from being created successfully?
  1. a) A comma has been left after the STATS_EXIST_EXCEPTION exception.

  2. b) The STATS_EXIST_EXCEPTION has not been declared as a number.

  3. c) The STATS_EXIST_EXCEPTION has not been declared as an exception.

  4. d) none of the above


Correct Option: C

Which operator will be evaluated first in the following SELECT statement? SELECT (2+3*4/2–5) FROM dual;

  1. +

  2. *

  3. /


Correct Option: B
  1. a) Only local or packaged sub programs can be overloaded.

  2. b) Overloading allows different functions with the same name that differ only in their return types.

  3. c) Overloading allows different subprograms with the same number, type and order of the parameter.

  4. d) Overloading allows different subprograms with the same name and same number or type of the parameters.

  5. e) Overloading allows different subprograms with the same name but different in either number or type or order of parameter.


Correct Option: A,E
  1. a) Packages can be nested.

  2. b) You can pass parameters to packages.

  3. c) A package is loaded into memory each time it is invoked.

  4. d) The contents of packages can be shared by many applications.

  5. e) You can achieve information hiding by making package constructs private.


Correct Option: D,E

Which of the following statements is false with respect to packages?

  1. a) The package itself cannot be called, parameterized, or nested.

  2. b) The format of a package is similar to that of a subprogram.

  3. c) The contents can be shared by many applications once written.

  4. d) None of the above.


Correct Option: D

Private constructs in the package body are hidden and inaccessible. Is this an advantage of a package?

  1. a)Yes

  2. b)No

  3. c)

  4. d)


Correct Option: A
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