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Oracle 1Z0-147 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Triggers | - DML triggers - Trigger timing and events |
| Packages | - Package specification and body - Advantages of packages |
| SQL Fundamentals | - Basic SELECT statements and filtering - Joins and set operations |
| Advanced PL/SQL Features | - Records and complex data types - Collections (associative arrays, nested tables) |
| Cursors | - Cursor FOR loops - Implicit and explicit cursors |
| Control Structures | - Conditional statements (IF, CASE) - Loops (FOR, WHILE, LOOP) |
| Exception Handling | - Predefined exceptions - User-defined exceptions |
| PL/SQL Fundamentals | - Variables and data types - PL/SQL block structure |
| Stored Procedures and Functions | - Creation and execution - Parameters and return values |
Oracle9i program with pl/sql Sample Questions:
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 is set to 0.10 each time the package is invoked in a session.
- B. The value of DISCOUNT_RATE always remains 0.00 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.
Correct Answer: D 🗳️
Explanation: Only visible for ActualCollection members. You can sign-up / login (it's free).
Which statements are true? (Choose all that apply)
- A. 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.
- B. If errors occur during the compilation of a trigger, the trigger is still created.
- C. 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.
- D. If errors occur during the compilation of a trigger you can use the SHOW ERRORS command within iSQL *Plus to see the compilation errors.
Correct Answer: A,B,D 🗳️
Explanation: Only visible for ActualCollection members. You can sign-up / login (it's free).
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. BB_PACK.UPD_PLAYER_STAT.V_PLAYER_AVG := .333;
- B. BB_PACK.V_PLAYER_AVG := .333;
- C. This variable cannot be assigned a value from outside of the package.
- D. V_PLAYER_AVG := .333;
Correct Answer: C 🗳️
Explanation: Only visible for ActualCollection members. You can sign-up / login (it's free).
How can you migrate from a LONG to a LOB data type for a column?
- A. Use the DBMS_MANAGE_LOB.MIGRATE procedure.
- B. You cannot migrate from a LONG to a LOB date type for a column.
- C. Use the UTL_MANAGE_LOMIGRATE procedure.
- D. Use the DBMS_LOB.MIGRATE procedure.
- E. Use the ALTER TABLE command.
Correct Answer: E 🗳️
Explanation: Only visible for ActualCollection members. You can sign-up / login (it's free).
Which statement is valid when removing procedures?
- A. Use a drop procedure statement to drop a standalone procedure.
- B. 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. - C. Use a drop procedure statement to drop a procedure that is part of a package.
Then recompile the package body. - D. Use a drop procedure statement to drop a procedure that is part of a package.
Then recompile the package specification.
Correct Answer: A 🗳️
Explanation: Only visible for ActualCollection members. You can sign-up / login (it's free).
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