In a decision support system $($DSS$)$ environment, a $q,$ is the liaison between users and designers.

system architect

managerial designer

model builder

database builder

In a case$-$based reasoning system, the CBS system $$ if there is no exact match between the new case and cases stored in the database.

can query the user for clarification

can request that the user reprogram the system

automatically terminates

designs a new solution