Search code examples
umlmodelingmdriven

Embed connections between classes in MDriven

When creating the connections between two classes in UML (using MDriven), I inserted the correct values in each end (e.g. 0..*). However, when pressing Enter, an (e) appeared after the values. I found out, that it stands for "embed".

Which end of the connection should be "embed" in certain situations and why?

Solution

  • Embed is best explained as "in which table is the foreign key placed" This is often self-evident:

    • One-to-Many - foreign key will go in many end.
    • Many-to-Many - foreign key will go into link-class(possibly implicit)
    • One-to-One - This is where Embed-flag becomes important, because it is optional where to put the foreign key.

    If you do not know what end to pick - you can just pick any of them. But as you grow more experienced you might want to have the ability to control this.