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What are the shortcomings of dfd as a tool for performing structured analysis?
Data Flow Diagram explains the logic behind the data flow within the system. Dfd performs an implicit functional decomposition of the system. But the shortcoming is the DFD is time consuming process.
Draw a data flow diagram for an hospital management system?
For any data flow diagram first look at the existing processes. Student registration, class selection, professor/teacher class assignment, testing, grading and I am sure the list goes on. Once you have provided the beginning scope of the software by pruning the list of existing processes you can then develop a list of documents and communications that are used to transfer information and authority to others in the system. It is these documents and activities that are data flow items. The entities that are involved in sending or receiving these same communications are nodes in the system. Of course this is cursory and very general answer.
How does the process of buffering work in operating systems to optimize data transfer and improve system performance?
Buffering in operating systems involves temporarily storing data in a buffer before it is processed or transferred. This helps optimize data transfer by allowing the system to handle data more efficiently. By buffering data, the operating system can smooth out fluctuations in data flow, reduce delays, and improve overall system performance.
What are the three types of data flow?
the three types of data flow are: simplex,half duplex and full duplex
What is a channel path?
A set of wires or light guides that allow data to flow in parallel rather than in serial mode. The wider the channel path, the more data that flow over it.
