After deploying our application and opening our page in the browser, we can see the
results of our SQL UPDATE statement.
As we can see, the zip codes for all rows we inserted earlier were modified by our
SQL UPDATE statement.
Deleting database data
The <sql:update> tag can be used to delete data from the database. This can be
done by placing an SQL DELETE statement inside its body. With NetBeans, we can
simply drag the DB Delete item from the NetBeans palette into our page.
After doing so, we are asked for the usual additional information.