jeudi 31 décembre 2020

Design pattern for Messaging system

In the College of Informatics Engineering, we want to build a system for the Diwan department to facilitate dealing with incoming and outgoing transactions and internal circulars so that we have the basic operations: Ward arrives at college. Send out of college. Circulating an internal memo within the college. It is required to draw a class diagram using the appropriate design model and with the help of the following: A.the content of this correspondence. B.Other related correspondence called "linked documents" what is design pattern for this question and Hw can i do it?

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