Final answer:
The incorrect statement about stream processing systems is that they have access to all data; they are actually intended for real-time analysis and typically work on recent data, not the entire historical dataset. The correct choice of option is O Has access to all data.
Step-by-step explanation:
The statement about a stream processing system that is not correct is: "Has access to all data". Stream processing systems are designed to process data in real time, handling data that is continuously generated, often from sources like sensors, user interactions, or transactions.
These systems typically compute on a single data element or a window of recent data and need to process these elements within a short time frame, often in seconds, to ensure near-real-time analysis. While it's true that computations in stream processing are generally independent, these systems usually do not have access to all the data because they are not designed for historical data analysis over the entire dataset, unlike batch processing systems.