Difference between implicit cursor and explicit cursor.

Question

hi all,
i have used explicit cursor, i know the way of using implicit cursor, but i don't what the difference between both.
Is they both are different. if yes y? which cursor is most reliable to use.
please tell me..
Thanks..

Answer 1

OK,
1- An IMPLICIT cursor is automatically declared by Oracle every time an SQL statement is executed The user will not be aware of this happening and will not be able to control or process
the information in an implicit cursor.
Example:
SET SERVEROUTPUT ON
BEGIN
UPDATE Customers
SET Cust_name = 'B'
WHERE Cust_name LIKE 'B%';
DBMS_OUTPUT.PUT_LINE(SQL%ROWCOUNT);
END;
2- An EXPLICIT cursor is defined by the program for any query that returns more than one row of data.
That means the programmer has declared the cursor within the PL/SQL code block. This declaration allows for the application to sequentially process each row of data as it is returned by the cursor.
Example :
DECLARE
CURSOR C_MyCursor IS
SELECT *
FROM bookings
WHERE Cust_no = 701;
see this post
http://comsci.liu.edu/~vasilaky/db2/cursors.htm :-)