The '''SERM''' (Structured Entity Relationship Model) is an amplification of the [[Entity-relationship model|ERM]] which is commonly used for [[data modeling]]. It was first proposed from Prof. Dr. Elmer[[Elmar Sinz|Elmar J. Sinz]] in 1988. The SERM is commonly used in the [[SAP AG|SAP]]-world for the [[data modeling]].<ref name="Röthlin2010">{{cite book|author=Michael Röthlin|title=Management of Data Quality in Enterprise Resource Planning Systems|url=http://books.google.com/books?id=wyheQllcyh0C&pg=PA118|year=2010|publisher=BoD – Books on Demand|isbn=978-3-89936-963-2|pages=118–}}</ref>
