Establishes a relationship between an item stored in an application's Cache object
and either a specific database table.
This class cannot be inherited.
You can add items with dependencies to your application's cache with the
"Cache.Add" and Insert methods.
When you add an item to an application's "Cache" object with
"DBCacheDependency", it monitors a specific database table so that
when the table changes, items associated with
the table will be automatically removed from the Cache.
This helps you avoid losing changes made to the object between the time it is created and the
time it is inserted into the "Cache".