System architecture and design | Computer Science homework help

Briefly respond to all the following questions. Make sure to explain and back up your responses with facts and examples. This assignment should be in APA format.

Figure 8.1 Business analytics logical data flow diagram (DFD).

Consider the data flow “octopus,” as shown in Figure 8.1, Business analytics logical data flow, from the link (  ). 

How can the analysis system gather data from all these sources that, presumably, are protected themselves?