full usefullness of CURRENT OF ???

[Maryann Atkinson]

Could anyone give us an idea as to the full usefullness
of CURRENT OF?  Here are my two separate examples:
/*   1  this one has a CURRENT OF  */

DECLARE

   CURSOR  EmpCursor  IS
           SELECT  *
           FROM    Emp
           FOR     UPDATE;
BEGIN
    FOR EmpRec IN EmpCursor LOOP
        UPDATE EMP
        SET    SALARY = SALARY * 1.08
        WHERE  CURRENT OF EmpCursor
    END LOOP;

END;

/*   2 same as above, except without the CURRENT OF   */
DECLARE
  CURSOR  EmpCursor  IS
          SELECT  *
          FROM    Emp
          FOR     UPDATE;
BEGIN
    FOR EmpRec IN EmpCursor LOOP
        UPDATE EMP
        SET    SALARY = SALARY * 1.08
        WHERE  EMP_ID = EmpRec.Emp_ID;
    END LOOP;

END;
/
Is one more efficient than the other? If I could have done
business without the CURRENT OF, then why did oracle made
it available?
thx
maa 

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Author: Maryann Atkinson
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