Database : berlintest Restore : NO Operator : countintstream Number : 1 Signature: ((stream int)) -> int Example : query intstream (1,10) countintstream Result : 10 Operator : filterintstream Number : 1 Signature: ((stream int) (map int bool)) -> (stream int) Example : query intstream (1,10) filterintstream[. > 7] printintstream countintstream Result : 3 Operator : intstream Number : 1 Signature: (int int) -> (stream int) Example : query intstream (1, 335) countintstream Result : 335 Operator : printintstream Number : 1 Signature: ((stream int)) -> (stream int) Example : query intstream (1, 5) printintstream countintstream Result : 5