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Oracle 1Z0-147 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Database Triggers | 15% | - Trigger concepts
|
| Topic 2: Procedures and Functions | 20% | - Creating and invoking functions
|
| Topic 3: PL/SQL Fundamentals | 15% | - Declaring Variables and Data Types
|
| Topic 4: Error Handling and Exceptions | 10% | - Exception concepts
|
| Topic 5: Control Structures | 15% | - Iterative statements
|
| Topic 6: Packages | 20% | - Package structure
|
| Topic 7: Managing Dependencies and Performance | 5% | - Object dependencies
|
Oracle9i program with pl/sql Sample Questions:
Which two statements about packages are true? (Choose two)
- A. A package is loaded into memory each time it is invoked.
- B. You can achieve information hiding by making package constructs private.
- C. You can pass parameters to packages.
- D. Packages can be nested.
- E. The contents of packages can be shared by many applications.
Explanation: Only visible for TestPassKing members. You can sign-up / login (it's free).
Examine this package
CREATE OR REPLACE PACKAGE discounts
IS
g_id NUMBER := 7839;
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 NUMBERI)
IS
BEGIN
DBMS_OUTPUT.PUT LINE ( 'Discounted '||
TO_CHAR(p_price*NVL(dlscount_rate, 1)));
END display_price;
BEGIN
Discount_rate = 0.10;
END discounts;
/
The SQL*Plus SERVEROUTPUT setting is turned on in your session. You execute the procedure
DISPLAY_PRICE from SQL*Plus with the command EXECUTE discounts. display_price (100);
What is the result?
- A. Discounted 0.00
- B. Discounted 10
- C. Discounted 100
- D. Discounted NULL
- E. Discounted 0.10
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Which three are true statements about dependent objects? (Choose three)
- A. You can view whether an object is valid or invalid in the USER_OBJECTS data dictionary view.
- B. An object with status of invalid cannot be a referenced object.
- C. Invalid objects cannot be described.
- D. You can view whether an object is valid or invalid in the USER_STATUS data dictionary view.
- E. All schema objects have a status that is recorded in the data dictionary.
- F. The Oracle server automatically records dependencies among objects.
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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 records an audit trail when a user makes changes to the database.
- B. 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.
- C. The trigger marks the user as logged on to the database before an audit statement is issued.
- 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.
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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
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