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Oracle 1Z0-147 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Cursors | - Cursor FOR loops - Implicit and explicit cursors |
| Topic 2: Packages | - Package specification and body - Advantages of packages |
| Topic 3: Triggers | - DML triggers - Trigger timing and events |
| Topic 4: Stored Procedures and Functions | - Parameters and return values - Creation and execution |
| Topic 5: Control Structures | - Loops (FOR, WHILE, LOOP) - Conditional statements (IF, CASE) |
| Topic 6: Advanced PL/SQL Features | - Collections (associative arrays, nested tables) - Records and complex data types |
| Topic 7: SQL Fundamentals | - Joins and set operations - Basic SELECT statements and filtering |
| Topic 8: PL/SQL Fundamentals | - PL/SQL block structure - Variables and data types |
| Topic 9: Exception Handling | - User-defined exceptions - Predefined exceptions |
Oracle9i program with pl/sql Sample Questions:
Which three statements are true regarding database triggers? (Choose three)
- A. A database trigger executes implicitly whenever a particular event takes place.
- B. A database trigger fires whenever a data event (such as DML) or system event (such as logon, shutdown) occurs on a schema or database.
- C. A database trigger needs to be executed explicitly whenever a particular event takes place.
- D. With a schema, triggers fire for each event for all users; with a database, triggers fire for each event for that specific user.
- E. A database trigger is a PL/SQL block, C, or Java procedure associated with a table, view, schema, or the database.
Correct Answer: A,B,E 🗳️
Explanation: Only visible for TestInsides members. You can sign-up / login (it's free).
Examine this code
CREATE OR REPLACE PROCEDURE load bfile (p_flle_loc IN VARCHAR2)
IS
V_file BFILE;
V_filename VARCHAR2 (16);
CURSOR emp_cursor IS
SELECT employee_id
FROM employees
WHERE Job_id = 'IT_PROG'
FOR UPDATE;
BEGIN
FOR emp_record IN emp_cursor LOOP
V_filename:= emp_record.employee_id || '.GIF';
V_file := BFILENAME(p_flle_loc, v_filename);
END LOOP;
END;
/
What does the BFILENAME function do?
- A. It creates a directory object for use with the external BFILEs
- B. It checks for the existence of an external BFILE
- C. It returns a BFILE locator that is associated with a physical LOB binary file on the server's file system
- D. It reads data from an external BFILE
Correct Answer: C 🗳️
Explanation: Only visible for TestInsides 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
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. VALDIATE_PLAYER_STAT is invalidated.
- B. VALIDATE_PLAYER_STAT cannot recompile and must be recreated.
- C. VALIDATE_PLAYER_STAT and BB_PACK are invalidated.
- D. VALIDATE_PLAYER_STAT is not invalidated.
Correct Answer: D 🗳️
Explanation: Only visible for TestInsides members. You can sign-up / login (it's free).
Examine this code:
CREATE OR REPLACE STORED FUNCTION get_sal
(p_raise_amt NUMBER, p_employee_id employees.employee_id%TYPE)
RETURN NUMBER
IS
v_salary NUMBER;
v_raise NUMBER(8,2);
BEGIN
SELECT salary
INTO v_salary
FROM employees
WHERE employee_id = p_employee_id;
v_raise := p_raise_amt * v_salary;
RETURN v_raise;
END;
Which statement is true?
- A. This statement creates a stored function named get_sal.
- B. This statement creates a stored procedure named get_sal.
- C. This statement fails.
- D. This statement creates a stored function named get_sal with a status of invalid.
- E. This statement returns a raise amount based on an employee id.
Correct Answer: C 🗳️
Explanation: Only visible for TestInsides members. You can sign-up / login (it's free).
What is true about stored procedures?
- A. A stored procedure is named PL/SQL block with at least one parameter declaration in the procedure specification.
- B. A stored procedure uses the DELCLARE keyword in the procedure specification to declare formal parameters.
- C. A stored procedure uses the DECLARE keyword in the procedure body to declare formal parameters.
- D. A stored procedure must have at least one executable statement in the procedure body.
Correct Answer: D 🗳️
Explanation: Only visible for TestInsides members. You can sign-up / login (it's free).
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