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Evaluation of Complex Cardinality Constraints

Zhou, Jian ; Baumann, Peter (1992)
Evaluation of Complex Cardinality Constraints.
Entity-Relationship Approach - ER `92. Proceedings.
Conference or Workshop Item, Bibliographie

Abstract

In a previous paper, the valence concept, a general method to describe relationships, has been introduced along with a set-theoretic formal semantics. This approach is type-based, admits variants and detailed cardinality specifications, and can cope with incomplete intermediate states. Nevertheless, the resulting syntax is easy to understand. In this paper, an implementation of the valence concept is outlined. Special emphasis has been placed on minimizing space and time overhead on instant level, but it turns out that data dictionary overhead also keeps within reasonable limits. Please note that the valence concept is not a complete data model by itself, but a relationship model which can be embedded in a wide range of data models. (IGD)

Item Type: Conference or Workshop Item
Erschienen: 1992
Creators: Zhou, Jian ; Baumann, Peter
Type of entry: Bibliographie
Title: Evaluation of Complex Cardinality Constraints
Language: English
Date: 1992
Publisher: Springer, Berlin
Series: Lecture Notes in Computer Science (LNCS); 645
Event Title: Entity-Relationship Approach - ER `92. Proceedings
Abstract:

In a previous paper, the valence concept, a general method to describe relationships, has been introduced along with a set-theoretic formal semantics. This approach is type-based, admits variants and detailed cardinality specifications, and can cope with incomplete intermediate states. Nevertheless, the resulting syntax is easy to understand. In this paper, an implementation of the valence concept is outlined. Special emphasis has been placed on minimizing space and time overhead on instant level, but it turns out that data dictionary overhead also keeps within reasonable limits. Please note that the valence concept is not a complete data model by itself, but a relationship model which can be embedded in a wide range of data models. (IGD)

Uncontrolled Keywords: APRIL, Entity relationship model, Relationship semantics, Valence concepts
Divisions: UNSPECIFIED
20 Department of Computer Science
20 Department of Computer Science > Interactive Graphics Systems
Date Deposited: 16 Apr 2018 09:10
Last Modified: 16 Apr 2018 09:10
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