参照网络请求模型。
A DFD shows what kind of information will be input to and output from the system, how the data will advance through the system, and where the data will be stored.
数据的整合、分离、转换等。
https://www.cnblogs.com/feng9exe/p/8436588.html
参照网络请求模型。
A DFD shows what kind of information will be input to and output from the system, how the data will advance through the system, and where the data will be stored.
数据的整合、分离、转换等。
https://www.cnblogs.com/feng9exe/p/8436588.html