The UpdateShield system
uses two index files for checking for new updates, which include the Client Side and Server Side index files. These index
files are XML files that contain the update properties. When performing
software update, the Updater loads the Server Side index file from the server
and checks against its Client Side index file to determine whether a new update
is available.
One of the main properties in both index files
include release ID, which encodes version number, release date, Key ID, and
Program ID. The Updater checks for update by decoding the release ID from both
the Client Side and Server Side index files. A new update is available when the
version number on the Server Side index file is higher than the version number
on the Client Side index file.
See Also
·
Setup Script for the Updater