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Oracle 1Z0-147 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: SQL Fundamentals | - Basic SELECT statements and filtering - Joins and set operations |
| Topic 2: Exception Handling | - Predefined exceptions - User-defined exceptions |
| Topic 3: Control Structures | - Loops (FOR, WHILE, LOOP) - Conditional statements (IF, CASE) |
| Topic 4: Packages | - Package specification and body - Advantages of packages |
| Topic 5: Stored Procedures and Functions | - Parameters and return values - Creation and execution |
| Topic 6: Triggers | - Trigger timing and events - DML triggers |
| Topic 7: PL/SQL Fundamentals | - PL/SQL block structure - Variables and data types |
| Topic 8: Advanced PL/SQL Features | - Records and complex data types - Collections (associative arrays, nested tables) |
| Topic 9: Cursors | - Cursor FOR loops - Implicit and explicit cursors |
Oracle9i program with pl/sql Sample Questions:
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('2500', p_loc =>2500)
- B. EXECUTE add_dept(p_loc=>2500)
- C. EXECUTE add_dept('Education', 2500)
- D. EXECUTE add_dept(p_name=>'Education', 2500)
- E. EXECUTE add_dept(p_loc=>2500, p_name=>'Education')
Correct Answer: A,B,C,E 🗳️
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When using a PL/SQL stored package, how is a side effect defined?
- A. changes only to database tables
- B. changes only to packaged public variables defined in a package body
- C. changes to database tables or packaged public variables defined in a package body
- D. changes only to packaged public variables defined in a package specification
- E. changes to database tables or packaged variables defined in a package specification
Correct Answer: E 🗳️
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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 invoked the procedure audit_action each time a user logs on to his/her schema and adds the username to the audit table.
- B. The trigger invokes the procedure audit_action each time a user logs on to the database and adds the username to the audit table.
- C. The trigger records an audit trail when a user makes changes to the database.
- D. The trigger marks the user as logged on to the database before an audit statement is issued.
Correct Answer: B 🗳️
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Which two describe a stored procedure? (Choose two)
- A. The executable section of a stored procedure contains statements that assigns values, control execution, and return values to the calling environment.
- B. A stored procedure is typically written in SQL.
- C. A stored procedure is a type of PL/SQL subprogram that performs an action.
- D. A stored procedure is a named PL/SQL block that can accept parameters.
- E. A stored procedure has three parts: the specification, the body, and the exception handler part.
Correct Answer: C,D 🗳️
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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_bonus employees.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 form a DELETE command against the EMPLOYEES table.
- B. You can call the BONUS.CALC_SALARY packaged function from an INSERT command against the EMPLOYEES table.
- C. You can call the BONUS.CALC_SALARY packaged function from an UPDATE command against the EMPLOYEES table.
- D. You can call the BONUS.CALC_SALARY packaged function from a SELECT command against the EMPLOYEES table.
Correct Answer: D 🗳️
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