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Oracle 1Z0-147 Exam Syllabus Topics:

SectionWeightObjectives
Database Triggers15%- Creating and managing triggers
  • 1. Trigger body and restrictions
  • 2. Enabling, disabling, and dropping triggers
- Trigger concepts
  • 1. Firing order and timing
  • 2. DML, INSTEAD OF, DDL triggers
Procedures and Functions20%- Creating and invoking functions
  • 1. Return values and usage in SQL
  • 2. Differences between procedures and functions
- Creating and invoking procedures
  • 1. Privileges and dependencies
  • 2. Parameter modes IN, OUT, IN OUT
Managing Dependencies and Performance5%- Object dependencies
  • 1. Privileges and security
  • 2. Invalidation and recompilation
PL/SQL Fundamentals15%- Declaring Variables and Data Types
  • 1. Scalar, composite, reference types
  • 2. Using %TYPE and %ROWTYPE attributes
- Overview of PL/SQL
  • 1. Block structure and execution
  • 2. Architecture and benefits
Packages20%- Advanced package features
  • 1. Overloading subprograms
  • 2. Package initialization
  • 3. Persistent state and cursors
- Package structure
  • 1. Specification and body
  • 2. Scope and visibility
Control Structures15%- Iterative statements
  • 1. LOOP, WHILE, FOR loops
  • 2. Nested loops and EXIT conditions
- Conditional statements
  • 1. IF, ELSIF, CASE expressions
Error Handling and Exceptions10%- Exception concepts
  • 1. User-defined exceptions
  • 2. Predefined exceptions
- Handling exceptions
  • 1. EXCEPTION block structure
  • 2. Propagation and logging

Oracle9i program with pl/sql Sample Questions:

Which two dictionary views track dependencies? (Choose two)

  • A. UTL_DEPTREE
  • B. DEPTREE_TEMPTAB
  • C. USER_SOURCE
  • D. USER_DEPENDENCIES
  • E. USER_OBJECTS
  • F. DBA_DEPENDENT_OBJECTS
Reveal Solution  Discussion  0

Correct Answer: B,D  🗳️

Explanation: Only visible for Lead2PassExam members. You can sign-up / login (it's free).

Which two statements about packages are true? (Choose two)

  • A. The contents of packages can be shared by many applications.
  • B. Packages can be nested.
  • C. A package is loaded into memory each time it is invoked.
  • D. You can achieve information hiding by making package constructs private.
  • E. You can pass parameters to packages.
Reveal Solution  Discussion  0

Correct Answer: A,D  🗳️

Explanation: Only visible for Lead2PassExam members. You can sign-up / login (it's free).

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. DELETE_EMP
  • B. UPDATE_SAL
  • C. UPDATE_EMP
  • D. INSERT_EMP
  • E. CALC_TAX
  • F. MANAGE_EMPS
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Explanation: Only visible for Lead2PassExam members. You can sign-up / login (it's free).

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, p_amount OUT NUMBER(10, 2))
  • C. CREATE OR REPLACE FUNCTION tax_amt
    (p_id NUMBER)
    RETURN NUMBER(10,2)
  • D. CREATE OR REPLACE PROCEDURE tax_amt
    (p_id NUMBER)
    RETURN NUMBER
  • E. CREATE OR REPLACE PROCEDURE tax_amt
    (p_id NUMBER, p_amount OUT NUMBER)
Reveal Solution  Discussion  0

Correct Answer: A,E  🗳️

Explanation: Only visible for Lead2PassExam members. You can sign-up / login (it's free).

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. INSTEAD OF trigger
  • B. System event trigger
  • C. Application trigger
  • D. DML trigger
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Explanation: Only visible for Lead2PassExam members. You can sign-up / login (it's free).

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