?As you said in the book, chapter "Encapsulate What Varies" (page 35): you can isolate the parts of the program that
vary in independent modules, protecting the rest of the code from adverse effects.
-> For example I have an internal system where we have HR, IT, Accounting department. So should I make 3 projects with 3 DB for each features in each department independently?
Is there something that I can break the whole system more "modulely"?
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