Changes
= Data Model =
A good way to design a data model is to create an [https://de.wikipedia.org/wiki/Entity-Relationship-Modell Entity-Relationship Diagram]. It is recommended to do so in the scope of a Technical Design (see [[https://wiki.augmensys.com/index.php?title=HowTo:Organize_UBIK_Development#tab=Requirement_Supply_Chain]Requirement Supply Chain]).
== Object-oriented and relational ==
