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Oracle9i program with pl/sql Sample Questions:

1. When creating a function, in which section will you typically find the RETURN keyword?

A) DECLARATIVE
B) DECLARATIVE,EXECUTABLE and EXCEPTION HANDLING
C) EXECUTABLE and HEADER
D) HEADER only

2. Examine this code:
CREATE OR REPLACE PRODECURE add_dept (p_dept_name VARCHAR2 DEFAULT 'placeholder', p_location VARCHAR2 DEFAULT 'Boston')
IS BEGIN INSERT INTO departments VALUES (dept_id_seq.NEXTVAL, p_dept_name, p_location); END add_dept; /
Which three are valid calls to the add_dep procedure? (Choose three)

A) add_dept(p_location=>'New York');
B) add_dept(, 'New York');
C) add_dept('Accounting');
D) add_dept;

3. 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 reads data from an external BFILE
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 creates a directory object for use with the external BFILEs

4. You need to remove the database triggerBUSINESS_HOUR.Which command do you use to remove the trigger in the SQL *Plus environment?

A) DELETE TRIGGER business_hour;
B) REMOVE TRIGGER business_hour;
C) DELETE FROM USER_TRIGGERS
WHERE TRIGGER_NAME = 'BUSINESS_HOUR';
D) ALTER TRIGGER business_hour REMOVE;
E) DROP TRIGGER business_hour;

5. Examine the trigger heading:
CREATE OR REPLACE TRIGGER salary_check BEFORE UPDATE OF sal, job ON emp FOR EACH ROW
Under which condition does this trigger fire?

A) Only when both values of the SAL and JOB columns in a row are updated together in the EMP table.
B) When any column other than the SAL and JOB columns in a row are updated in the EMP table.
C) When a row is inserted into the EMP table.
D) When the value of the SAL or JOB column in a row is updated in the EMP table.

Solutions: