Editing Terry Halpin (section)

== Work ==
Halpin's research interest is in the field of "[[conceptual modeling]] and conceptual query technology for [[information systems]], using a business rules approach".<ref name="ORMHALPIN08"/>

[[File:Schema for Geologic Surface.svg|thumb|240px|right|An application of Object Role Modeling.<ref name="SMR99">Stephen M. Richard (1999). [http://pubs.usgs.gov/of/1999/of99-386/richard.html Geologic Concept Modeling]. U.S. Geological Survey Open-File Report 99-386.</ref>]]

=== Object-role modeling ===
With his doctoral thesis Halpin (1989) formalized [[object-role modeling]] (ORM),<ref>Object-Role Modeling: Principles and Benefits (2010) http://www.igi-global.com/article/object-role-modeling/40952</ref> a "method for designing and querying [[database model]]s at the conceptual level, where the application is described in terms easily understood by non-technical users".<ref name="ORM08">[http://www.orm.net Object role modeling (ORM)] website. Retrieved 1 October 2008.</ref><ref>{{Citation |last=Halpin |first=Terry |title=Object-Role Modeling |date=2009 |url=https://doi.org/10.1007/978-0-387-39940-9_251 |encyclopedia=Encyclopedia of Database Systems |pages=1941–1946 |editor-last=LIU |editor-first=LING |access-date=2023-10-12 |place=Boston, MA |publisher=Springer US |language=en |doi=10.1007/978-0-387-39940-9_251 |isbn=978-0-387-39940-9 |editor2-last=ÖZSU |editor2-first=M. TAMER|url-access=subscription }}</ref>