Expected Problems
Query can not specify object precisely
`Causes for low unit readiness?’
(helpful database gets extra stuff)
Objects (N) are not organized according to all
possible access classifications (a) = (Na)
`Problems with ship propulsion, but not propellors’
Some objects cover multiple classes
Some objects are misfiled (happens easily to others),
costly/impossible to guarantee avoidance
Intel data in operational mission file
Gio Wiederhold TIHI Oct96 *