TY - GEN
T1 - When entities are types
T2 - 29th International Conference on Conceptual Modeling, ER 2010
AU - Currim, Faiz
AU - Ram, Sudha
PY - 2010
Y1 - 2010
N2 - Type-instantiation relationships (TIRs) appear in many application domains including RFID-based inventory tracking, securities markets, health care, incident-response management, travel, advertising, and academia. For example an emergency response (type) is instantiated in the actual incident, or an advertisement (type) serves impressions on a website. This kind of relationship has received little attention in literature notwithstanding its ubiquity. Conventional modeling does not properly capture its underlying semantics. This can lead to data redundancy, denormalized relations and loss of knowledge about constraints during implementation. Our work formally defines and discusses the semantics of the type-instantiation relationship. We also present an analysis of how TIRs affect other relationships in a conceptual database schema, and the relational implications of our approach.
AB - Type-instantiation relationships (TIRs) appear in many application domains including RFID-based inventory tracking, securities markets, health care, incident-response management, travel, advertising, and academia. For example an emergency response (type) is instantiated in the actual incident, or an advertisement (type) serves impressions on a website. This kind of relationship has received little attention in literature notwithstanding its ubiquity. Conventional modeling does not properly capture its underlying semantics. This can lead to data redundancy, denormalized relations and loss of knowledge about constraints during implementation. Our work formally defines and discusses the semantics of the type-instantiation relationship. We also present an analysis of how TIRs affect other relationships in a conceptual database schema, and the relational implications of our approach.
KW - data modeling
KW - instantiation
KW - materialization
KW - relationships
KW - typing
UR - http://www.scopus.com/inward/record.url?scp=78649968130&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78649968130&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-16385-2_18
DO - 10.1007/978-3-642-16385-2_18
M3 - Conference contribution
AN - SCOPUS:78649968130
SN - 364216384X
SN - 9783642163845
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 138
EP - 147
BT - Advances in Conceptual Modeling - Applications and Challenges, ER 2010 Workshops ACM-L, CMLSA, CMS, DE@ER, FP-UML, SeCoGIS, WISM, Proceedings
Y2 - 1 November 2010 through 4 November 2010
ER -