| If bound mode does
not meet your performance needs, you can manage all your data in a custom cache
through virtual-mode event handlers. For example, you can use virtual mode to
implement a just-in-time data loading mechanism that retrieves only as much
data from a networked database as is necessary for optimal performance. This
scenario is particularly useful when working with large amounts of data over a
slow network connection or with client machines that have a limited amount of
RAM or storage space. |