Conceptual design of fuzzy object-oriented databases using extended entity-relationship model

Entity-relationship -extended entity-relationship models play a crucial rol e in the conceptual design of relational databases as well as object-orient ed databases. Recently, several approaches have been proposed to enhance ob ject-oriented databases (OODBs) using fuzzy set theory. In this paper, we i ntroduce a fuzzy extended entity-relationship model to cope with imperfect as well as complex objects in the real world at a conceptual level. In part icular, we provide the formal approach to mapping a fuzzy extended entity-r elationship model to a fuzzy object-oriented database schema. (C) 2001 John Wiley & Sons, Inc.