Final answer:
The correct answer is 'None of the others' as Batch sequential, Pipe and filter, and Process Control are all established styles of data-flow architectures used in software systems design.
Step-by-step explanation:
The question Which is NOT a style of data-flow architectures? relates to different architectural styles used for data processing within software systems. In data-flow architecture, the focus is on how data moves through a system or a series of components and transformations.
The mentioned styles, such as Batch sequential, Pipe and filter, and Process Control, are indeed styles of data-flow architecture. Batch sequential involves processing data in batches, moving from one stage to the next only when a batch is complete. Pipe and filter architecture streams data through a series of processing steps, or filters, connected by pipes. Process Control architecture is more about managing ongoing processes and operations in real-time where the data flow is based on feedback from the processes being controlled.
Therefore, the NOT in the list is 'None of the others,' which does not specify any specific data-flow style and instead implies that all the other options listed are styles of data-flow architecture.