The Notion of ``Classes of a Path'' in ER Schemas

Authors:
Junkang Feng
Affiliations:
-
Venue:
ADBIS '99 Proceedings of the Third East European Conference on Advances in Databases and Information Systems
Year:
1999

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Abstract

In Entity-Relationship (ER) modeling connection traps are a known problems. But the literature does not seem to have provided an adequate treatment of it. Moreover, it seems to be only a special case of a more fundamental problem of whether a piece of information can be represented by a database that is specified by an ER schema. To develop a systematic treatment for this problem, in this paper we suggest adopting a semiotic approach, which enables the separation of topological connections at the syntactic level and semantic connections, and an examination of the inter-relationships between them. Based on this, we propose and describe the notion of 'classes of a path' in an ER schema, and then indicate its implications to ER modeling.