TY - GEN
T1 - Conceptual Modeling of Time-Varying Information
AU - Gregersen, Heidi
AU - Jensen, Christian Søndergaard
N1 - Conference code: 1
PY - 2004
Y1 - 2004
N2 - A wide range of database applications manage information that varies over time. Many of the underlying database schemas of these were designed using the Entity-Relationship (ER) model. In the research community as well as in industry, it is common knowledge that the temporal aspects of the mini-world are important, but difficult to capture using the ER model. Several enhancements to the ER model have been proposed in an attempt to support the modeling of temporal aspects of information. Common to the existing temporally extended ER models, few or no specific requirements to the models were given by their designers.With the existing proposals, an ontological foundation, and novel requirements as its basis, this paper defines a graphical, temporally extended ER model. The ontological foundation serves to ensure an orthogonal design, and the requirements aim, in part, at ensuring a design that naturally extends the syntax and semantics of the regular ER model. The result is a novel model that satisfies an array of properties not satisfied by any single previously proposed model.
AB - A wide range of database applications manage information that varies over time. Many of the underlying database schemas of these were designed using the Entity-Relationship (ER) model. In the research community as well as in industry, it is common knowledge that the temporal aspects of the mini-world are important, but difficult to capture using the ER model. Several enhancements to the ER model have been proposed in an attempt to support the modeling of temporal aspects of information. Common to the existing temporally extended ER models, few or no specific requirements to the models were given by their designers.With the existing proposals, an ontological foundation, and novel requirements as its basis, this paper defines a graphical, temporally extended ER model. The ontological foundation serves to ensure an orthogonal design, and the requirements aim, in part, at ensuring a design that naturally extends the syntax and semantics of the regular ER model. The result is a novel model that satisfies an array of properties not satisfied by any single previously proposed model.
M3 - Article in proceeding
SP - 248
EP - 255
BT - Proceedings of the International Conference on Computing, Communications and Control Technologies
T2 - International Conference on Computing, Communications and Control Technologies
Y2 - 19 May 2010
ER -