Author pages are created from data sourced from our academic publisher partnerships and public sources.
- Publications
- Influence
Object-Role Modeling (ORM/NIAM)
- T. Halpin
- Computer Science
- Handbook on Architectures of Information Systems
- 2006
TLDR
Object-Role Modeling: an overview
- T. Halpin
- Computer Science
- 2002
TLDR
- 47
- 3
- PDF
A finite-element analysis study of the metatarsophalangeal joint of the hallux rigidus.
- R. Flavin, T. Halpin, R. O’Sullivan, D. Fitzpatrick, A. Ivanković, M. Stephens
- Medicine
- The Journal of bone and joint surgery. British…
- 1 October 2008
Hallux rigidus was first described in 1887. Many aetiological factors have been postulated, but none has been supported by scientific evidence. We have examined the static and dynamic imbalances in… Expand
UML data models from an ORM perspective: Part 7
- T. Halpin
- Computer Science
- 1998
TLDR
- 34
- 1
- PDF
Subtyping Revisited
- T. Halpin
- 2007
In information systems modeling, the business domain being modeled often exhibits subtyping aspects that can prove challenging to implement in either relational databases or object-oriented code. In… Expand
- 6
- 1
- PDF
Modeling Collections in UML and ORM
- T. Halpin
- Computer Science
- 2000
TLDR
- 8
- 1
- PDF
What Is An Elementary Fact ?
- T. Halpin
- 1998
This is a slightly edited version of a paper originally published in Proceedings of First NIAM-ISDM Conference, eds G.M. Nijssen & J. Sharp, Utrecht, (Sep, 1993), and is reprinted here by permission.… Expand
- 8
- 1
- PDF
Entity Relationship modeling from an ORM perspective: Part 3
- T. Halpin
- Computer Science
- 1999
TLDR
- 13
- 1
- PDF
Join Constraints
- T. Halpin
- 2002
Many application domains involve constraints that, at a conceptual modeling level, apply to one or more schema paths, each of which involves one or more conceptual joins (where the same conceptual… Expand
- 6
- 1
- PDF
Atomicity and Normalization
A common aim of data modeling approaches is to pr oduce schemas whose instantiations are always redundancy-free. Th is is especially useful when the implementation target is a relational database.… Expand
- 1
- 1
- PDF