Paper Info
Title
Mapping an Extended Entity-Relationship Schema into a Schema of Complex Objects
Abstract
With the advent of object-oriented database systems, there is an urgent need to define a methodology for mapping a conceptual schema into an object-oriented one, and migrating from a conventional database to an object-oriented database containing complex objects. This paper deals with an important step of the migration process by describing a technique for complex entity formation which involves recursively grouping entities and relationships from an extended entity-relationship schema, using semantic abstractions such as aggregation, generalization and association. The abstract schema produced by the clustering technique at a given level of grouping can then be converted into a structurally object-oriented schema allowing the explicit expression of complex entity types, relationships and integrity constraints. The overall methodology is implemented within the environment of INTER-SEM, a prototype for semantic object-oriented modelling.
Year
DOI
Venue
1995
10.1007/BFb0020533
OOER
Keywords
Field
DocType
extended entity-relationship schema,complex objects
Data mining,Conceptual schema,Star schema,Information retrieval,Computer science,Database schema,Data integrity,Cluster analysis,Schema (psychology),Recursion,Entity–relationship model
Conference
ISBN
Citations 
PageRank 
3-540-60672-6
16
8.78
References 
Authors
10
3
Name
Order
Citations
PageRank
Rokia Missaoui1983136.45
Jean-Marc Gagnon2168.78
Robert Godin3777103.79