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Oracle9i program with pl/sql Sample Questions:

1. Examine this code:
CREATE OR REPLACE FUNCTION gen_email_name
(p_first_name VARCHAR2, p_last_name VARCHAR2, p_id NUMBER)
RETURN VARCHAR2
is
v_email_name VARCHAR2(19);
BEGIN
v_email_home := SUBSTR(p_first_name, 1, 1) ||
SUBSTR(p_last_name, 1, 7) ||
'@Oracle.com';
UPDATE employees
SET email = v_email_name
WHERE employee_id = p_id;
RETURN v_email_name;
END;
You run this SELECT statement:
SELECT first_name, last_name
gen_email_name(first_name, last_name, 108) EMAIL
FROM employees;
What occurs?

A) The SQL statement executes successfully and control is passed to the calling environment.
B) Employee 108 has his email name updated based on the return result of the function.
C) The statement fails because functions called from SQL expressions cannot perform DML.
D) The SQL statement executes successfully, because UPDATE and DELETE statements are ignoring in stored functions called from SQL expressions.
E) The statement fails because the functions does not contain code to end the transaction.

2. What happens during the execute phase with dynamic SQL for INSERT, UPDATE, and DELETE operations?

A) The rows are selected and ordered.
B) The area of memory established to process the SQL statement is released.
C) The validity of the SQL statement is established.
D) An area of memory is established to process the SQL statement.
E) The SQL statement is run and the number of rows processed is returned.

3. Which view displays indirect dependencies, indenting each dependency?

A) I_DEPT_TREE
B) DEPTREE
C) INDENT_TREE
D) IDEPTREE

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

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

5. Examine the code examples. Which one is correct?

A) CREATE OR REPLACE TRIGGER authorize_action CALL log_execution BEFORE INSERT ON EMPLOYEES; /
B) CREATE OR REPLACE TRIGGER authorize_action BEFORE EMPLOYEES INSERT CALL log_execution;
C) CREATE OR REPLACE TRIGGER authorize_action BEFORE EMPLOYEES INSERT CALL log_execution;
D) CREATE OR REPLACE TRIGGER authorize_action BEFORE INSERT ON EMPLOYEES CALL log_execution; /

Solutions: