Database Reference
In-Depth Information
The “top down” approach (frequently called “forward engineering”) means starting from
the conceptual data model and working our way towards the final physical solution—in
this case, a MongoDB database. The “bottom up” approach (frequently called “reverse en-
gineering”) means starting with a MongoDB database and working our way up towards the
conceptual data model. We take the bottom-up approach when we did not initially do mod-
eling in building the application, or the data models built were not maintained. After the
application has been built, it will need to be supported, and the data models are an essential
tool for the business and support teams to understand the structures in the application. In
the following case study, we will take the top-down approach, which is the most common
approach taken.
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