Oracle Certified Professional Exam Questions -Part I

Oracle Certified Professional

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1. You are creating some tables in your database as part of the logical data model Which of the following constraints have an index associated with them that is generated automatically by Oracle?
   1. Unique
   2. Foreign-key
   3. Check
   4. NOT NULL
2. You have a table with three associated indexes, two triggers, two references to that table from other tables, and a view You issue the DROP TABLE CASCADE CONSTRAINTS statement Which of the following objects will still remain after the statement is issued?
   A The triggers B The indexes C The foreign keys in the other tables D The view
3. In order to set your SQL*Plus session so that your NLS_DATE_FORMAT information is altered in a specific way every time you log into Oracle, what method would be used?
   A Setting preferences in the appropriate menu option B Creating an appropriate LOGINSQL file C Issuing the ALTER USER statement D Issuing the ALTER TABLE statement

4. The EMP_SALARY table has two columns, EMP_USER and SALARY EMP_USER is set to be the same as the Oracle username To support user MARTHA, the salary administrator, you create a view with the following statement: CREATE VIEW EMP_SAL_VW AS SELECT EMP_USER, SALARY FROM EMP_SALARY WHERE EMP_USER <> 'MARTHA'; MARTHA is supposed to be able to view and update anyone in the company's salary except her own through this view Which of the following clauses do you need to add to your view creation statement in order to implement this functionality?

   1. WITH ADMIN OPTION
   2. WITH GRANT OPTION
   3. WITH SECURITY OPTION
   4. WITH CHECK OPTION
5. You are developing PL/SQL code to manipulate and store data in an Oracle table All of the following numeric datatypes in PL/SQL can be stored in an Oracle database, except one Which is it?
   1. CHAR
   2. RAW
   3. DATE
   4. INTEGER
6. You are performing some conversion operations in your PL/SQL programs To convert a date value into a text string, you would use which of the following conversion functions?
   1. CONVERT
   2. TO_CHAR
   3. TO_NUMBER
   4. TO_DATE
7. You have a table called TEST_SCORE that stores test results by student personal ID number, test location, and date the test was taken Tests given in various locations throughout the country are stored in this table A student is not allowed to take a test for 30 days after failing it the first time, and there is a check in the application preventing the student from taking a test twice in 30 days at the same location Recently, it has come to everyone's attention that students are able to circumvent the 30-day rule by taking a test in a different location Which of the following SQL statements would be useful for identifying the students who have done so?
   1. SELECT ASTUDENT_ID, ALOCATION, BLOCATION FROM TEST_SCORE A, TEST_SCORE B WHERE ASTUDENT_ID = BSTUDENT_ID AND ALOCATION = BLOCATION AND TRUNC(ATEST_DATE)+30 <= TRUNC(BTEST_DATE) AND TRUNC(ATEST_DATE)-30 >= TRUNC(BTEST_DATE);
   2. SELECT ASTUDENT_ID, ALOCATION, BLOCATION FROM TEST_SCORE A, TEST_SCORE B WHERE ASTUDENT_ID = BSTUDENT_ID AND ALOCATION <> BLOCATION AND TRUNC(ATEST_DATE)+30 >= TRUNC(BTEST_DATE) AND TRUNC(ATEST_DATE)-30 <= TRUNC(BTEST_DATE);
   3. SELECT ASTUDENT_ID, ALOCATION, BLOCATION FROM TEST_SCORE A, TEST_SCORE B WHERE ASTUDENT_ID = BSTUDENT_ID AND ALOCATION = BLOCATION AND TRUNC(ATEST_DATE)+30 >= TRUNC(BTEST_DATE) AND TRUNC(ATEST_DATE)-30 <= TRUNC(BTEST_DATE);
   4. SELECT ASTUDENT_ID, ALOCATION, BLOCATION FROM TEST_SCORE A, TEST_SCORE B WHERE ASTUDENT_ID = BSTUDENT_ID AND ALOCATION <> BLOCATION AND TRUNC(ATEST_DATE)+30 <= TRUNC(BTEST_DATE) AND TRUNC(ATEST_DATE)-30 >= TRUNC(BTEST_DATE);
8. You create a view with the following statement: CREATE VIEW BASEBALL_TEAM_VW AS SELECT BJERSEY_NUM, BPOSITION, BNAME FROM BASEBALL_TEAM B WHERE BNAME = USER; What will happen when user JONES attempts to SELECT a listing for user SMITH?
   1. The SELECT will receive an error
   2. The SELECT will succeed
   3. The SELECT will receive NO ROWS SELECTED
   4. The SELECT will add data only to BASEBALL_TEAM
9. You query the database with this command: SELECT atomic_weight FROM chart_n WHERE (atomic_weight BETWEEN 1 AND 50 OR atomic_weight IN (25, 70, 95)) AND atomic_weight BETWEEN (25 AND 75) Which of the following values could the statement retrieve?
   1. 51
   2. 95
   3. 30
   4. 75
10. What will the following operation return? [Choose two] SELECT TO_DATE('01-jan-00') - TO_DATE('01-dec-99') FROM dual;
    1. 365 if the NLS_DATE_FORMAT is set to 'DD-mon-RR'
    2. A VARCHAR2 value
    3. An error; you can't do this with dates
    4. -36493 if the NLS_DATE_FORMAT is set to the default value
11. What is the purpose of the SUBSTR string function?
    1. To insert a capital letter for each new word in the string
    2. To return a specified substring from the string
    3. To return the number of characters in the string
    4. To substitute a non-null string for any null values returned
12. Evaluate this command: SELECT iisotope, gcalibration FROM chart_n i, gamma_calibrations g WHERE ienergy = genergy; What type of join is the command?
    1. Equijoin
    2. Nonequijoin
    3. Self-join
    4. The statement is not a join query
13. In a SELECT statement, which character is used to pass in a value at runtime?
    1. \
    2. %
    3. &
    4. _ (underscore)
14. Which single-row function could you use to return a specific portion of a character string?
    1. INSTR
    2. SUBSTR
    3. LPAD
    4. LEAST
15. What will the following statement return? SELECT LAST_NAME, FIRST_NAME, START_DATE FROM EMPLOYEES WHERE HIRE_date< Trunc(sysdate) 5;
    1. Employees hired in the past 5 years
    2. Employess hired in the past 5 days
    3. Employees hired more thatn 5 years ago
    4. Employees hired more than 5 days ago
16. Which function(s) accept arguments of any datatype? Select all that apply
    1. SUBSTR
    2. NVL
    3. ROUND
    4. DECODE
    5. SIGN
17. What will be returned from SIGN(ABS(NVL(-32,0)))?
    1. 1
    2. 32
    3. 1
    4. 0
    5. NULL
18. Which functions could you use to strip leading characters from a character string Select two
    1. LTRIM
    2. SUBSTR
    3. RTRIM
    4. INSTR
    5. MOD
19. what will the following query return? SELECT REPLACE(RTRIM('Anticipation','on'), 'ti','shun') from DUAL;
    1. Anticipashun
    2. Anshuncipashun
    3. Anshuncipashunon
    4. Anticipashunon
20. In oracle, what do trigonometric functions operate on?
    1. Degrees
    2. Radians
    3. Gradients
    4. The default is radians, but degrees or gradients can be specified
21. If it is 5 minutes past noon on 15 jan 2000, what will the following statement return? SELECT ROUND(SYSDATE) ROUND(SYSDATE,'Y') FROM DUAL;
    1. 155
    2. 15
    3. 0
    4. 16
22. Which statement about nested functions is most correct?
    1. Single-row nested functions can be nested in either single-row or group functions
    2. Group functions can be nested in other group functions
    3. Group functions cab be nested in single-row functions
    4. A, B and C
    5. A and B only
23. Why will the following query raise an exception? SELECT DEPT_NO, AVG(DISTINCT SALARY), COUNT(JO
24. JOB_COUNT FRIM EMP WHERE MGR LIKE 'J%' OR ABS(SALARY)>10 HAVING COUNT (JO
25. >5 ORDER BY 2 DESC;
    1. A HAVING clause cannot contain a group function
    2. The GROUP BY clause is missing
    3. Abs() is not an oracle function
    4. The query will not raise an exception
26. Why does the following SELECT statement fail? SELECT colorname Colour, MAX(cost) From itemdetail Where upper(colorname) like '%WHITE%' Group by colour Having count(*) > 20;
    1. A GROUP BY clause cannot contain a coloumn alias
    2. The condition COUNT (*) > 20 should be in the WHERE clause
    3. The GROUP BY clause must contain the group functions used in the SELECT list
    4. The HAVING Clause can only contain the group functions used in the SELECT list
27. What will the following query report? SELECT deptno, COUNT(*) FROM emp GROUP BY deptno;
    1. The number of employees in each department, including those without a deptnno
    2. The number of employees in each department, ecept those without a deptno
    3. The total number of employees, including those without a deptno
    4. The total number of employees, except those without a deptno
28. Which assertion about the following quires is true> SELECT COUNT(DISTICT mgr), MAX(DISTINCT salary) from emp; SELECT COUNT (ALL mgr), MAX(ALL salary) FROM emp;
    1. They will always return the same numbers in columns 1 and 2
    2. They may return different numbers in column 1 but will always return the same number in column 2
    3. They may return different numbers in column 1 and may return different numbers in column 2
    4. They will always return the same number in column 1 but may return different numbers in column 2
29. What is the limit on the number of values a subquery using the IN operator can return to the parent query?
    1. 1
    2. 32,764
    3. unlimited
    4. 0
30. When using multiple tables to query information, in which clause do you specify the table names?
    1. HAVING
    2. GROUP BY
    3. WHERE
    4. FROM
31. The contents of the CONTESTANTS table are listed as follows: NAME AGE COUNTRY ---------------- -------------- --------------- BERTRAND 24 FRANCE GONZALEZ 29 SPAIN HEINRICH 22 GERMANY TAN 39 CHINA SVENSKY
32. RUSSIA SOO 21 You issue the following query against this table: SELECT NAME FROM CONTESTANT WHERE (COUNTRY, AGE) IN ( SELECT COUNTRY, MIN(AGE) FROM CONTESTANT GROUP BY COUNTRY); What is the result?
    1. SOO
    2. HEINRICH
    3. BERTRAND
    4. GONZALEZ
33. To delete any constraint from the table we have to use command
    1. Drop Constraint
    2. Delet
    3. Alter *
    4. Truncate
34. All the operators are used in single row subquery except one
    1. Between and
    2. <>
    3. =
    4. in
35. All the commands executes in iSQLplus except one
    1. Column
    2. Compute
    3. define
    4. Accept
36. Ascript file which will be executed automatically in iSQLPlus is
    1. afiedtbuf
    2. loginsql
    3. both a and b
    4. none of the above
37. A command in iSQL plus is used to give the status of old and new value of variable
    1. set feedback
    2. set verify
    3. set confirm
    4. none of the above
38. All commands are used to save the changes of the transaction except one
    1. Commit
    2. exitting from sqlplus
    3. DDL command
    4. savepoint
    5. none of the above
39. A Clause which is used in joining two tables other than equality operator is
    1. join
    2. on
    3. in
    4. using
40. A Clause which is the pseudocolumn used to know the current value of the sequence
    1. nextval
    2. current_val
    3. currval
    4. none of the above
41. A Query which is used in top-N analysis is
    1. subquery
    2. correlated subquery
    3. inline query
    4. outer query
42. An operator is used to get and display the redundant records
    1. Union all
    2. Distinct
    3. Union
    4. Intersect
43. All the datatypes with respect to Oracle 9i is true except one
    1. DATE
    2. TIMESTAMP
    3. TIMSTAMP with TIME ZONE
    4. TIMESTAMP WITH LOCAL TIME ZONE
    5. None of the above
    
    

OCA/OCP Brain Questions on SQL,PL/SQL-II

31. You need to remove the database trigger BUSINESS_HOUR . Which command do you use to remove the trigger in the SQL *Plus environment? A. DROP TRIGGER business_hour; B. DELETE TRIGGER business_hour; C. REMOVE TRIGGER business_hour; D. ALTER TRIGGER business_hour REMOVE; E. DELETE FROM USER_TRIGGERS WHERE TRIGGER_NAME = .BUSINESS_HOUR .; Answer(s) A 32. A CALL statement inside the trigger body enables you to call _____. A. A package. B. A stored function. C. A stored procedure. D. Another database trigger. Answer(s) C 33. You are about to change the arguments of the CALC_TEAM_AVG function. Which dictionary view can you query to determine the names of the procedures and functions that invoke the CALC_TEAM_AVG function? A. USER_PROC_DEPENDS B. USER_DEPENDENCIES C. USER_REFERENCES D. USER_SOURCE Answer(s) B 34. You create a DML trigger. For the timing information, which is valid with a DML trigger? A. DURING B. INSTEAD OF C. ON SHUTDOWN D. BEFORE E. ON STATEMENT EXECUTION Answer(s) B 35. Which type of argument passes a value from a procedure to the calling environment? A. VARCHAR2 B. BOOLEAN C. OUT D. IN Answer(s) C 36. You want to create a PL/SQL block of code that calculates discounts on customer orders. This code will be invoked from several places, but only within the program unit ORDERTOTAL. What is the most appropriate location to store the code that calculates the discounts? A. A stored procedure on the server. B. A block of code in a PL/SQL library. C. A standalone procedure on the client machine. D. A block of code in the body of the program unit ORDERTOTAL. E. A local subprogram defined within the program unit ORDERTOTAL. Answer(s) A 37. Which statement about triggers is true? A. You use an application trigger to fire when a DELETE statement occurs. B. You use a database trigger to fire when an INSERT statement occurs. C. You use a system event trigger to fire when an UPDATE statement occurs. D. You use INSTEAD OF trigger to fire when a SELECT statement occurs. Answer(s) B 38. Examine this procedure: CREATE OR REPLACE PROCEDURE ADD_PLAYER (V_ID IN NUMBER, V_LAST_NAME VARCHAR2) IS BEGIN INSERT INTO PLAYER (ID,LAST_NAME) VALUES (V_ID, V_LAST_NAME); COMMIT; END; This procedure must invoke the APD_BAT_STAT procedure and pass a parameter. Which statement, when added to the above procedure will successfully invoke the UPD_BAT_STAT procedure? A. EXECUTE UPD_BAT_STAT(V_ID); B. UPD_BAT_STAT(V_ID); C. RUN UPD_BAT_STAT(V_ID); D. START UPD_BAT_STAT(V_ID); Answer(s) B 39. Which four triggering events can cause a trigger to fire? (Choose four) A. A specific error or any errors occurs. B. A database is shut down or started up. C. A specific user or any user logs on or off. D. A user executes a CREATE or an ALTER table statement. E. A user executes a SELECT statement with an ORDER BY clause. F. A user executes a JOIN statement that uses four or more tables. Answer(s) A,B,C,D 40. When creating a function in SQL *Plus, you receive this message: .Warning: Function created with compilation errors.. Which command can you issue to see the actual error message? A. SHOW FUNCTION_ERROR B. SHOW USER_ERRORS C. SHOW ERRORS D. SHOW ALL_ERRORS Answer(s) C 41. There is a CUSTOMER table in a schema that has a public synonym CUSTOMER and you are granted all object privileges on it. You have a procedure PROCESS_CUSTOMER that processes customer information that is in the public synonym CUSTOMER table. You have just created a new table called CUSTOMER within your schema. Which statement is true? A. Creating the table has no effect and procedure PROCESS_CUSTOMER still accesses data from public synonym CUSTOMER table. B. If the structure of your CUSTOMER table is the same as the public synonym CUSTOMER table then the procedure PROCESS_CUSTOMER is invalidated and gives compilation errors. C. If the structure of your CUSTOMER table is entirely different from the public synonym CUSTOMER table then the procedure PROCESS_CUSTOMER successfully recompiles and accesses your CUSTOMER table. D. If the structure of your CUSTOMER table is the same as the public synonym CUSTOMER table then the procedure PROCESS_CUSTOMER successfully recompiles when invoked and accesses your CUSTOMER table. Answer(s) D 42. Examine this package: CREATE OR REPLACE PACKAGE BB_PACK IS V_MAX_TEAM_SALARY NUMBER(12,2); PROCEDURE ADD_PLAYER(V_ID IN NUMBER, V_LAST_NAME VARCHAR2, V_SALARY_NUMBER; END BB_PACK; / CREATE OR REPLACE PACKAGE BODY BB_PACK IS PROCEDURE UPD_PLAYER_STAT (V_ID IN NUMBER, V_AB IN NUMBER DEFAULT 4, V_HITS IN NUMBER) IS BEGIN UPDATE PLAYER_BAT_STAT SET AT_BATS = AT_BATS + V_AB, HITS = HITS + V_HITS WHERE PLAYER_ID = V_ID) COMMIT; END UPD_PLAYER_STAT; PROCEDURE ADD_PLAYER (V_ID IN NUMBER, V_LAST_NAME VARCHAR2, V_SALARY NUMBER) IS BEGIN INSERT INTO PLAYER(ID,LAST_NAME,SALARY) VALUES (V_ID, V_LAST_NAME, V_SALARY); UPD_PLAYER_STAT(V_ID,0.0); END ADD_PLAYER; END BB_PACK; Which statement will successfully assign $75,000,000 to the V_MAX_TEAM_SALARY variable from within a stand-alone procedure? A. V_MAX_TEAM_SALARY := 7500000; B. BB_PACK.ADD_PLAYER.V_MAX_TEAM_SALARY := 75000000; C. BB_PACK.V_MAX_TEAM_SALARY := 75000000; D. This variable cannot be assigned a value from outside the package. Answer(s) C 43. Examine this code: CREATE OR REPLACE TRIGGER update_emp AFTER UPDATE ON emp BEGIN INSERT INTO audit_table (who, dated) VALUES (USER, SYSDATE); END; You issue an UPDATE command in the EMP table that results in changing 10 rows. How many rows are inserted into the AUDIT_TABLE ? A. 1 B. 10 C. None D. A value equal to the number of rows in the EMP table. Answer(s) A 44. Examine this package: CREATE OR REPLACE PACKAGE discounts IS g_id NUMBER := 7829; discount_rate NUMBER := 0.00; PROCEDURE display_price (p_price NUMBER); END discounts; / CREATE OR REPLACE PACKAGE BODY discounts IS PROCEDURE display_price (p_price NUMBER) IS BEGIN DBMS_OUTPUT.PUT_LINE( .Discounted .|| TO_CHAR(p_price*NVL(discount_rate, 1))); END display_price; BEGIN discount_rate :=0.10; END discounts; / Which statement is true? A. The value of DISCOUNT_RATE always remains 0.00 in a session. B. The value of DISCOUNT_RATE is set to 0.10 each time the package is invoked in a session. C. The value of DISCOUNT_RATE is set to 1.00 each time the procedure DISPLAY_PRICE is invoked. D. The value of DISCOUNT_RATE is set to 0.10 when the package is invoked for the first time in a session. Answer(s) D 45. Examine this code: CREATE OR REPLACE TRIGGER secure_emp BEFORE LOGON ON employees BEGIN IF (TO_CHAR(SYSDATE, .DY.) IN ( .SAT., .SUN.)) OR (TO_CHAR(SYSDATE, .HH24:MI .) NOT BETWEEN .08:00 AND .18:00 )THEN RAISE_APPLICATION_ERROR (-20500, .You may insert into the EMPLOYEES table only during business hours. .); END IF; END; What type of trigger is it? A. DML trigger B. INSTEAD OF trigger C. Application trigger D. System event trigger E. This is an invalid trigger. Answer(s) D 46. Which table should you query to determine when your procedure was last compiled? A. USER_PROCEDURES B. USER_PROCS C. USER_OBJECTS D. USER_PLSQL_UNITS Answer(s) C 47. Examine this code: CREATE OR REPLACE FUNCTION gen_email_name (p_first_name VARCHAR2, p_last_name VARCHAR2, p_id NUMBER) RETURN VARCHAR2 is v_email_name VARCHAR2(19); BEGIN v_email_home := SUBSTR(p_first_name, 1, 1) || SUBSTR(p_last_name, 1, 7) ||.@Oracle.com .; UPDATE employees SET email = v_email_name WHERE employee_id = p_id; RETURN v_email_name; END; You run this SELECT statement: SELECT first_name, last_name gen_email_name(first_name, last_name, 108) EMAIL FROM employees; What occurs? A. Employee 108 has his email name updated based on the return result of the function. B. The statement fails because functions called from SQL expressions cannot perform DML. C. The statement fails because the functions does not contain code to end the transaction. D. The SQL statement executes successfully, because UPDATE and DELETE statements are ignoring in stored functions called from SQL Expressions. E. The SQL statement executes successfully and control is passed to the calling environment. Answer(s) B 48. What part of a database trigger determines the number of times the trigger body executes? A. Trigger type B. Trigger body C. Trigger event D. Trigger timing Answer(s) C 49. What happens during the execute phase with dynamic SQL for INSERT, UPDATE, and DELETE operations? A. The rows are selected and ordered. B. The validity of the SQL statement is established. C. An area of memory is established to process the SQL statement. D. The SQL statement is run and the number of rows processed is returned. E. The area of memory established to process the SQL statement is released. Answer(s) D 50. Given a function CALCTAX : CREATE OR REPLACE FUNCTION calc tax (sal NUMBER) RETURN NUMBER IS BEGIN RETURN (sal * 0.05); END; If you want to run the above function from the SQL *Plus prompt, which statement is true? A. You need to execute the command CALCTAX(1000); . B. You need to execute the command EXECUTE FUNCTION calc tax; . C. You need to create a SQL *Plus environment variable X and issue the command :X := CALCTAX(1000); . D. You need to create a SQL *Plus environment variable X and issue the command EXECUTE :X := CALCTAX; E. You need to create a SQL *Plus environment variable X and issue the command EXECUTE :X := CALCTAX(1000); Answer(s) E 51. Which two dictionary views track dependencies? (Choose two) A. USER_SOURCE B. UTL_DEPTREE C. USER_OBJECTS D. DEPTREE_TEMPTAB E. USER_DEPENDENCIES F. DBA_DEPENDENT_OBJECTS Answer(s) D,E 52. Which statements are true? (Choose all that apply) A. If errors occur during the compilation of a trigger, the trigger is still created. B. If errors occur during the compilation of a trigger you can go into SQL *Plus and query the USER_TRIGGERS data dictionary view to see the compilation errors. C. If errors occur during the compilation of a trigger you can use the SHOW ERRORS command within iSQL *Plus to see the compilation errors. D. If errors occur during the compilation of a trigger you can go into SQL *Plus and query the USER_ERRORS data dictionary view to see compilation errors. Answer(s) A, C,D 53. You need to create a trigger on the EMP table that monitors every row that is changed and places this information into the AUDIT_TABLE . What type of trigger do you create? A. FOR EACH ROW trigger on the EMP table. B. Statement-level trigger on the EMP table. C. FOR EACH ROW trigger on the AUDIT_TABLE table. D. Statement-level trigger on the AUDIT_TABLE table. E. FOR EACH ROW statement-level trigger on the EMP table. Answer(s) A 54. Examine this package: CREATE OR REPLACE PACKAGE BB:PACK IS V_MAX_TEAM:SALAR NUMBER(12,2); PROCEDURE ADD_PLAYER(V_ID IN NUMBER, V_LAST_NAME VARCHAR2, V_SALARY NUMBER); END BB_PACK; / CREATE OR REPLACE PACKAGE BODY BB_PACK IS PROCEDURE UPD_PLAYER_STAT (V_ID IN NUMBER, V_AB IN NUMBER DEFAULT 4, V_HITS IN NUMBER) IS BEGIN UPDATE PLAYER_BAT_STAT SET AT_BATS = AT_BATS + V_AB, HITS = HITS + V_HITS WHERE PLAYER_ID = V_ID; COMMIT; END UPD_PLAYER_STAT; PROCEDURE ADD_PLAYER (V_ID IN NUMBER, V_LAST_NAME VARCHAR2, V_SALARY NUMBER) IS BEGIN INSERT INTO PLAYER(ID,LAST_NAME,SALARY) VALUES (V_ID, V_LAST_NAME, V_SALARY); UPD_PLAYER_STAT(V_ID,0,0); END ADD_PLAYER; END BB_PACK; You make a change to the body of the BB_PACK package. The BB_PACK body is recompiled. What happens if the stand-alone procedure VALIDATE_PLAYER_STAT references this package? A. VALIDATE_PLAYER_STAT cannot recompile and must be recreated. B. VALIDATE_PLAYER_STAT is not invalidated. C. VALDIATE_PLAYER_STAT is invalidated. D. VALIDATE_PLAYER_STAT and BB_PACK are invalidated. Answer(s) B 55. Which statement is valid when removing procedures? A. Use a drop procedure statement to drop a standalone procedure. B. Use a drop procedure statement to drop a procedure that is part of a package. Then recompile the package specification. C. Use a drop procedure statement to drop a procedure that is part of a package. Then recompile the package body. D. For faster removal and re-creation, do not use a drop procedure statement. Instead, recompile the procedure using the alter procedure statement with the REUSE SETTINGS clause. Answer(s) A 56. Examine this code: CREATE OR REPLACE PACKAGE bonus IS g_max_bonus NUMBER := .99; FUNCTION calc_bonus (p_emp_id NUMBER) RETURN NUMBER; FUNCTION calc_salary (p_emp_id NUMBER) RETURN NUMBER; END; / CREATE OR REPLACE PACKAGE BODY bonus IS v_salary employees.salary%TYPE; v_bonusemployees.commission_pct%TYPE; FUNCTION calc_bonus (p_emp_id NUMBER)RETURN NUMBER IS BEGIN SELECT salary, commission_pct INTO v_salary, v_bonus FROM employees WHERE employee_id = p_emp_id; RETURN v_bonus * v_salary; END calc_bonus FUNCTION calc_salary (p_emp_id NUMBER) RETURN NUMBER IS BEGIN SELECT salary, commission_pct INTO v_salary, v_bonus FROM employees WHERE employees RETURN v_bonus * v_salary + v_salary; END cacl_salary; END bonus; / Which statement is true? A. You can call the BONUS.CALC_SALARY packaged function from an INSERT command against the EMPLOYEES table. B. You can call the BONUS.CALC_SALARY packaged function from a SELECT command against the EMPLOYEES table. C. You can call the BONUS.CALC_SALARY packaged function form a DELETE command against the EMPLOYEES table. D. You can call the BONUS.CALC_SALARY packaged function from an UPDATE command against the EMPLOYEES table. Answer(s) B 57. Which code can you use to ensure that the salary is not increased by more than 10% at a time nor is it ever decreased? A. ALTER TABLE emp ADD CONSTRAINT ck_sal CHECK (sal BETWEEN sal AND sal*1.1); B. CREATE OR REPLACE TRIGGER check_sal BEFORE UPDATE OF sal ON emp FOR EACH ROW WHEN (new.sal < old.sal OR new.sal > old.sal * 1.1) BEGIN RAISE_APPLICATION_ERROR ( - 20508, . Do not decrease salary not increase by more than 10% ); END; C. CREATE OR REPLACE TRIGGER check_sal BEFORE UPDATE OF sal ON emp WHEN (new.sal < old.sal OR new.sal > old.sal * 1.1) BEGIN RAISE_APPLICATION_ERROR ( - 20508, .Do not decrease salary not increase by more than 10% ); END; D. CREATE OR REPLACE TRIGGER check_sal AFTER UPDATE OR sal ON emp WHEN (new.sal < old.sal OR -new.sal > old.sal * 1.1) BEGIN RAISE_APPLICATION_ERROR ( - 20508, .Do not decrease salary not increase by more than 10% ); END; Answer(s) B 58. Which two statements describe the state of a package variable after executing the package in which it is declared? (Choose two) A. It persists across transactions within a session. B. It persists from session to session for the same user. C. It does not persist across transaction within a session. D. It persists from user to user when the package is invoked. E. It does not persist from session to session for the same user. Answer(s) A,E 59. Which two programming constructs can be grouped within a package? (Choose two) A. Cursor B. Constant C. Trigger D. Sequence E. View Answer(s) A,B 60. Which two statements about packages are true? (Choose two) A. Packages can be nested. B. You can pass parameters to packages. C. A package is loaded into memory each time it is invoked. D. The contents of packages can be shared by many applications. E. You can achieve information hiding by making package constructs private. Answer(s) D,E 61. Examine this code: CREATE OR REPLACE PRODECURE add_dept (p_dept_name VARCHAR2 DEFAULT .placeholder ., p_location VARCHAR2 DEFAULT .Boston .) IS BEGIN INSERT INTO departments VALUES (dept_id_seq.NEXTVAL, p_dept_name, p_location); END add_dept; / Which three are valid calls to the add_dep procedure ? (Choose three) A. add_dept; B. add_dept( .Accounting .); C. add_dept(, .New York .); D. add_dept(p_location=> .New York .); Answer(s) A,B,D 62. You have created a stored procedure DELETE_TEMP_TABLE that uses dynamic SQL to remove a table in your schema. You have granted the EXECUTE privilege to user A on this procedure. When user A executes the DELETE_TEMP_TABLE procedure, under whose privileges are the operations performed by default? A. SYS privileges B. Your privileges C. Public privileges D. User A.s privileges E. User A cannot execute your procedure that has dynamic SQL. Answer(s) D 63. Which three are true statements about dependent objects? (Choose three) A. Invalid objects cannot be described. B. An object with status of invalid cannot be a referenced object. C. The Oracle server automatically records dependencies among objects. D. All schema objects have a status that is recorded in the data dictionary. E. You can view whether an object is valid or invalid in the USER_STATUS data dictionary view. F. You can view whether an object is valid or invalid in the USER_OBJECTS data dictionary view. Answer(s) C,D,F 64. Examine this function: CREATE OR REPLACE FUNCTION CALC_PLAYER_AVG (V_ID in PLAYER_BAT_STAT.PLAYER_ID%TYPE) RETURN NUMBER IS V_AVG NUMBER; BEGIN SELECT HITS / AT_BATS INTO V_AVG FROM PLAYER_BAT_STAT WHERE PLAYER_ID = V_ID; RETURN (V_AVG); END; Which statement will successfully invoke this function in SQL *Plus? A. SELECT CALC_PLAYER_AVG(PLAYER_ID) FROM PLAYER_BAT_STAT; B. EXECUTE CALC_PLAYER_AVG(31); C. CALC_PLAYER(.RUTH.); D. CALC_PLAYER_AVG(31); E. START CALC_PLAYER_AVG(31) Answer(s) A

OCA/OCP Brain Dump Questions on SQL,PL/SQL

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_EXITS_EXCEPTION THEN DBMS_OUTPUT.PUT_LINE (Cannot Delete this player, child records exist in PLAYER_BAT_STAT table); END; What prevents this procedure from being created successfully? A. A comma has been left after the STATS_EXI ST_EXCEPTI ON exception. B. The STATS_EXIST_EXCEPTI ON has not been declared as a number. C. The STATS_EXIST_EXCEPTI ON has not been declared as an exception. D. Only predefined exceptions are allowed in the EXCEPTI ON section. Answer(s) C 2. Under which two circumstances do you design database triggers? (Choose two) A. To duplicate the functionality of other triggers. B. To replicate built-in constraints in the Oracle server such as primary key and foreign key. C. To guarantee that when a specific operation is performed, related actions are performed. D. For centralized, global operations that should be fired for the triggering statement, regardless of which user or application issues the statement. Answer(s) C,D 3. Local procedure A calls remote procedure B. Procedure B was compiled at 8 A.M. Procedure A was modified and recompiled at 9 A.M. Remote procedure B was later modified and recompiled at 11 A.M. The dependency mode is set to TI MESTAMP. What happens when procedure A is invoked at 1 P.M? A. There is no affect on procedure A and it runs successfully. B. Procedure B is invalidated and recompiles when invoked. C. Procedure A is invalidated and recompiles for the first time it is invoked. D. Procedure A is invalidated and recompiles for the second time it is invoked. Answer(s) D 4. What is a condition predicate in a DML trigger? A. A conditional predicate allows you to specify a WHEN-LOGGING-ON condition in the trigger body. B. A conditional predicate means you use the NEW and OLD qualifiers in the trigger body as a condition. C. A conditional predicate allows you to combine several DBM triggering events into one in the trigger body. D. A conditional predicate allows you to specify a SHUTDOWN or STARTUP condition in the trigger body. Answer(s) C You choose correct 5. This statement fails when executed: CREATE OR REPLACE TRIGGER CALC_TEAM_AVG AFTER INSERT ON PLAYER BEGIN INSERT INTO PLAYER_BATSTAT (PLAYER_ID, SEASON_YEAR, AT_BATS, HITS) VALUES (:NEW.ID, 1997, 0, 0) ; END; To which type must you convert the trigger to correct the error? A. Row B. Statement C. ORACLE FORM trigger D. Be f o r e Answer(s) A 6. An internal LOB is _____. A. A table. B. A column that is a primary key. C. Stored in the database. D. A file stored outside of the database, with an internal pointer to it from a database column. Answer(s) C 7. You need to disable all triggers on the EMPLOYEES table. Which command accomplishes this? A. None of these commands; you cannot disable multiple triggers on a table in one command. B. ALTER TRI GGERS ON TABLE e mp l o y e e s DI SABLE; C. ALTER e mp l o y e e s DI SABLE ALL TRI GGERS; D. ALTER TABLE employees DISABLE ALL TRIGGERS; Answer(s) D 8. You have a row level BEFORE UPDATE trigger on the EMP table. This trigger contains a SELECT statement on the EMP table to ensure that the new salary value falls within the minimum and maximum salary for a given job title. What happens when you try to update a salary value in the EMP table? A. The trigger fires successfully. B. The trigger fails because it needs to be a row level AFTER UPDATE trigger. C. The trigger fails because a SELECT statement on the table being updated is not allowed. D. The trigger fails because you cannot use the minimum and maximum functions in a BEFORE UPDATE trigger. Answer(s) C 9. You need to implement a virtual private database (vpd). In order to have the vpd functionality, a trigger is required to fire when every user initiates a session in the database. What type of trigger needs to be created? A. DML trigger B. System event trigger C. INSTEAD OF trigger D. Application trigger Answer(s) B 10. Which two program declarations are correct for a stored program unit? (Choose two) A. CREATE OR REPLACE FUNCTION tax_amt (p_id NUMBER) RETURN NUMBER B. CREATE OR REPLACE PROCEDURE tax_amt (p_id NUMBER) RETURN NUMBER C. CREATE OR REPLACE PROCEDURE tax_amt (p_id NUMBER, p_amount OUT NUMBER) D. CREATE OR REPLACE FUNCTION tax_amt (p_id NUMBER) RETURN NUMBER(10,2) E. CREATE OR REPLACE PROCEDURE tax_amt (p_id NUMBER, p_amount OUT NUMBER(10, 2)) Answer(s) a,c 11. The creation of which four database objects will cause a DDL trigger to fire? (Choose four) A. Index B. Cluster C. Package D. Function E. Synonyms F. Dimensions G. Database links Answer(s) ABCD 12. Examine this code: CREATE OR REPLACE PROCEDURE insert_dept (p_location_id NUMBER) IS v_dept_id NUMBER(4); BEGIN INSERT INTO departments VALUES (5, .Education., 150, p_location_id); SELECT department_id INTO v_dept_id FROM employees WHERE employee_id=99999; END insert_dept; / CREATE OR REPLACE PROCEDURE insert_location ( p_location_id NUMBER, p_city VARCHAR2) IS BEGIN INSERT INTO locations(location_id, city) VALUES (p_location_id, p_city); insert_dept(p_location_id); END insert_location; / You just created the departments, the locations, and the employees table. You did not insert any rows. Next you created both procedures. You new invoke the insert_location procedure using the following command: EXECUTE insert_location (19, .San Francisco .) What is the result in this EXECUTE command? A. The locations, departments, and employees tables are empty. B. The departments table has one row. The locations and the employees tables are empty. C. The location table has one row. The departments and the employees tables are empty. D. The locations table and the departments table both have one row. The employees table is empty. Answer(s) D 13. What is true about stored procedures? A. A stored procedure uses the DELCLARE keyword in the procedure specification to declare formal parameters. B. A stored procedure is named PL/SQL block with at least one parameter declaration in the procedure specification. C. A stored procedure must have at least one executable statement in the procedure body. D. A stored procedure uses the DECLARE keyword in the procedure body to declare formal parameters. Answer(s) C 14. Examine the trigger: CREATE OR REPLACE TRIGGER Emp_count AFTER DELETE ON Emp_tab FOR EACH ROW DELCARE n INTEGER; BEGIN SELECT COUNT(*) INTO n FROM Emp_tab; DMBS_OUTPUT.PUT_LINE( ‘There are now’ || a || ‘employees’); END; This trigger results in an error after this SQL statement is entered: DELETE FROM Emp_tab WHERE Empno = 7499; How do you correct the error? A. Change the trigger type to a BEFORE DELETE. B. Take out the COUNT function because it is not allowed in a trigger. C. Remove the DBMS_OUTPUT statement because it is not allowed in a trigger. D. Change the trigger to a statement-level trigger by removing FOR EACH ROW. Answer(s) D 15. The OLD and NEW qualifiers can be used in which type of trigger? A. Row level DML trigger B. Row level system trigger C. Statement level DML trigger D. Row level application trigger E. Statement level system trigger F. Statement level application trigger Answer(s) A 16. Which view displays indirect dependencies, indenting each dependency? A. DEPTREE B. IDEPTREE C. INDENT_TREE D. I_DEPT_TREE Answer(s) B 17. Examine this code: CREATE OR REPLACE PROCEDURE audit_action (p_who VARCHAR2)AS BEGIN INSERT INTO audit(schema_user) VALUES(p_who); END audit_action; / CREATE OR REPLACE TRIGGER watch_it AFTER LOGON ON DATABASE CALL audit_action(ora_login_user) / What does this trigger do? A. The trigger records an audit trail when a user makes changes to the database. B. The trigger marks the user as logged on to the database before an audit statement is issued. C. The trigger invoked the procedure audit_action each time a user logs on to his/her schema and adds the username to the audit table. D. The trigger invokes the procedure audit_action each time a user logs on to the database and adds the username to the audit table. Answer(s) D 18. Examine this procedure: CREATE OR REPLACE PROCEDURE UPD_BAT_STAT (V_ID IN NUMBER DEFAULT 10, V_AB IN NUMBER DEFAULT 4) IS BEGIN UPDATE PLAYER_BAT_STAT SET AT_BATS = AT_BATS + V_AB WHERE PLAYER_ID = V_ID; COMMIT; END; Which two statements will successfully invoke this procedure in SQL *Plus? (Choose two) A. EXECUTE UPD_BAT_STAT; B. EXECUTE UPD_BAT_STAT(V_AB=>10, V_ID=>31); C. EXECUTE UPD_BAT_STAT(31, .FOUR., .TWO.); D. UPD_BAT_STAT(V_AB=>10, V_ID=>31); E. RUN UPD_BAT_STAT; Answer(s) A,B 19. Examine this code: CREATE OR REPLACE FUNCTION gen_email_name (p_first_name VARCHAR2, p_last_name VARCHAR2, p_id NUMBER) RETURN VARCHAR2 IS v_email_name VARCHAR2(19); BEGIN v_email_name := SUBSTR(p_first_name, 1, 1) || SUBSTR(p_last_name, 1, 7) || .@Oracle.com .; UPDATE employees SET email = v_email_name WHERE employee_id = p_id; RETURN v_email_name; END; Which statement removes the function? A. DROP gen_email_name; B. REMOVE gen_email_name; C. DELETE gen_email_name; D. DROP FUNCTION gen_eamil_name; Answer(s) D 20. Examine this code: CREATE OR REPLACE PACKAGE comm_package IS g_comm NUMBER := 10; PROCEDURE reset_comm(p_comm IN NUMBER); END comm_package; / User Jones executes the following code at 9:01am: EXECUTE comm_package.g_comm := 15 User Smith executes the following code at 9:05am: EXECUTE comm_paclage.g_comm := 20 which statement is true? A. g_ comm has a value of 15 at 9:06am for Smith. B. g_ comm has a value of 15 at 9:06am for Jones. C. g_comm has a value of 20 at 9:06am for both Jones and Smith. D. g_comm has a value of 15 at 9:03 am for both Jones and Smith. E. g_comm has a value of 10 at 9:06am for both Jones and Smith. F. g_comm has a value of 10 at 9:03am for both Jones and Smith Answer(s) B 21. Examine this package: CREATE OR REPLACE PACKAGE BB_PACK IS V_MAX_TEAM_SALARY NUMBER(12,2); PROCEDURE ADD_PLAYER(V_ID IN NUMBER, V_LAST_NAME VARCHAR2, V_SALARY NUMBER); END BB_PACK; / CREATE OR REPLACE PACKAGE BODY BB_PACK IS V_PLAYER_AVG NUMBER(4,3); PROCEDURE UPD_PLAYER_STAT(V_ID IN NUMBER, V_AB IN NUMBER DEFAULT 4, V_HITS IN NUMBER) IS BEGIN UPDATE PLAYER_BAT_STAT SET AT_BATS = AT_BATS + V_AB, HITS = HITS + V_HITS WHERE PLAYER_ID = V_ID; COMMIT; VALIDATE_PLAYER_STAT(V_ID); END UPD_PLAYER_STAT; PROCEDURE ADD_PLAYER (V_ID IN NUMBER, V_LAST_NAME VARCHAR2, V_SALARY NUMBER)IS BEGIN INSERT INTO PLAYER(ID,LAST_NAME,SALARY) VALUES (V_ID, V_LAST_NAME, V_SALARY); UPD_PLAYER_STAT(V_ID,0,0); END ADD_PLAYER; END BB_PACK / Which statement will successfully assign .333 to the V_PLAYER_AVG variable from a procedure outside the package? A. V_PLAYER_AVG := .333; B. BB_PACK.UPD_PLAYER_STAT.V_PLAYER_AVG := .333; C. BB_PACK.V_PLAYER_AVG := .333; D. This variable cannot be assigned a value from outside of the package. Answer(s) D 22. What can you do with the DBMS_LOB package? A. Use the DBMS_LOB.WRITE procedure to write data to a BFILE. B. Use the DBMS_LOB.BFILENAME function to locate an external BFILE. C. Use the DBMS_LOB.FILEEXISTS function to find the location of a BFILE. D. Use the DBMS_LOB.FILECLOSE procedure to close the file being accessed. Answer(s) D 23. Examine this package: CREATE OR REPLACE PACKAGE manage_emps IS tax_rate CONSTANT NUMBER(5,2) := .28; v_id NUMBER; PROCEDURE insert_emp (p_deptno NUMBER, p_sal NUMBER); PROCEDURE delete_emp; PROCEDURE update_emp; FUNCTION calc_tax (p_sal NUMBER) RETURN NUMBER; END manage_emps; / CREATE OR REPLACE PACKAGE BODY manage_emps IS PROCEDURE update_sal (p_raise_amt NUMBER) IS BEGIN UPDATE emp SET sal = (sal * p_raise_emt) + sal WHERE empno = v_id; END; PROCEDURE insert_emp (p_deptno NUMBER, p_sal NUMBER) IS BEGIN INSERT INTO emp(empno, deptno, sal) VALYES (v_id, p_depntno, p_sal); END insert_emp; PROCEDURE delete_emp IS BEGIN DELETE FROM emp WHERE empno = v_id; END delete_emp; PROCEDURE update_emp IS v_sal NUMBER(10,2); v_raise NUMBER(10, 2); BEGIN SELECT sal INTO v_sal FROM emp WHERE empno = v_id; IF v_sal < 500 THEN v_raise := .05; ELSIP v_sal < 1000 THEN v_raise := .07; ELSE v_raise := .04; END IF; update_sal(v_raise); END update_emp; FUNCTION calc_tax (p_sal NUMBER)RETURN NUMBER IS BEGIN RETURN p_sal * tax_rate; END calc_tax; END manage_emps; / What is the name of the private procedure in this package? A. CALC_TAX B. INSERT_EMP C. UPDATE_SAL D. DELETE_EMP E. UPDATE_EMP F. MANAGE_EMPS Answer(s) C 24. Which two dopes the INSTEAD OF clause in a trigger identify? (Choose two) A. The view associated with the trigger. B. The table associated with the trigger. C. The event associated with the trigger. D. The package associated with the trigger. E. The statement level or for each row association to the trigger. Answer(s) A,E 25. Which three are valid ways to minimize dependency failure? (Choose three) A. Querying with the SELECT * notification. B. Declaring variables with the %TYPE attribute. C. Specifying schema names when referencing objects. D. Declaring records by using the %ROWTYPE attribute. E. Specifying package.procedure notation while executing procedures. Answer(s) A,B,D 26. Examine this code: CREATE OR REPLACE PROCEDURE add_dept ( p_name departments.department_name%TYPE DEFAULT ‘unknown‘, p_loc departments.location_id%TYPE DEFAULT 1700) IS BEGIN INSERT INTO departments(department_id, department_name, loclation_id) VALUES (dept_seq.NEXTVAL,p_name, p_loc); END add_dept; / You created the add_dept procedure above, and you now invoke the procedure in SQL *Plus. Which four are valid invocations? (Choose four) A. EXECUTE add_dept(p_loc=>2500) B. EXECUTE add_dept( ‘Education’, 2500) C. EXECUTE add_dept( .2500 , p_loc =>2500) D. EXECUTE add_dept(p_name=> ‘Education’, 2500) E. EXECUTE add_dept(p_loc=>2500, p_name=> ‘Education’) Answer(s) A, B, C,E 27. Which two describe a stored procedure? (Choose two) A. A stored procedure is typically written in SQL. B. A stored procedure is a named PL/SQL block that can accept parameters. C. A stored procedure is a type of PL/SQL subprogram that performs an action. D. A stored procedure has three parts: the specification, the body, and the exception handler part. E. The executable section of a stored procedure contains statements that assigns values, control execution, and return values to the calling environment. Answer(s) B,C 28. To be callable from a SQL expression, a user-defined function must do what? A. Be stored only in the database. B. Have both IN and OUT parameters. C. Use the positional notation for parameters. D. Return a BOOLEAN or VARCHAR2 data type. Answer(s) A 29. Examine this procedure: CREATE OR REPLACE PROCEDURE INSERT_TEAM (V_ID in NUMBER, V_CITY in VARCHAR2 DEFAULT ‘AUSTIN’, V_NAME in VARCHAR2) IS BEGIN INSERT INTO TEAM (id, city, name) VALUES (v_id, v_city, v_name); COMMIT; END which two statements will successfully invoke this procedure in SQL *Plus? (Choose two) A. EXECUTE INSERT_TEAM; B. EXECUTE INSERT_TEAM(3, V_NAME=> ‘LONGHORNS’, V_CITY=> ‘AUSTIN’); C. EXECUTE INSERT_TEAM(3, ‘AUSTIN’, ‘LONGHORNS’); D. EXECUTE INSERT_TEAM (V_ID:= V_NAME:=‘LONGHORNS’, V_CITY := ‘AUSTIN’); E. EXECUTE INSERT_TEAM (3, ‘LONGHORNS’); Answer(s) B,C 30. How can you migrate from a LONG to a LOB data type for a column? A. Use the DBMS_MANAGE_LOB.MIGRATE procedure. B. Use the UTL_MANAGE_LOB.MIGRATE procedure. C. Use the DBMS_LOB.MIGRATE procedure. D. Use the ALTER TABLE command. E. You cannot migrate from a LONG to a LOB date type for a column. Answer(s) D