Data modeling and querying with fuzzy sets: A systematic survey

Z Ma, L Yan - Fuzzy sets and systems, 2022 - Elsevier
Uncertainty extensively exists in data and knowledge intensive applications, in which fuzzy
information processing plays a crucial role. Fuzzy sets have been extensively used to …

A literature overview of fuzzy database modeling

ZM Ma - Intelligent Databases: Technologies and Applications, 2007 - igi-global.com
Fuzzy set theory has been extensively applied to extend various data models and resulted in
numerous contributions, mainly with respect to the popular relational model or to some …

Extending object-oriented databases for fuzzy information modeling

ZM Ma, WJ Zhang, WY Ma - Information Systems, 2004 - Elsevier
In this paper, based on possibility distribution and the semantic measure of fuzzy data, we
introduce an extended object-oriented database model to handle imperfect as well as …

A fuzzy object‐oriented data model for managing vague and uncertain information

G Bordogna, G Pasi, D Lucarella - International journal of …, 1999 - Wiley Online Library
In this paper, a fuzzy Object‐Oriented Data model (FOOD) is defined based on the extension
of a Graph‐based Object model (D. Lucarella and A. Zanzi “A graph‐oriented data model,” …

[PDF][PDF] A Literature Overview of Fuzzy Conceptual Data Modeling.

ZM Ma, L Yan - J. Inf. Sci. Eng., 2010 - Citeseer
Fuzzy set theory has been extensively applied to extend various database models and
resulted in numerous contributions, mainly with respect to the popular relational model or to …

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

ZM Ma, WJ Zhang, WY Ma… - International Journal of …, 2001 - Wiley Online Library
Entity‐relationship–extended entity‐relationship models play a crucial role in the conceptual
design of relational databases as well as object‐oriented databases. Recently, several …

Fuzzy information modeling in UML class diagram and relational database models

ZM Ma, F Zhang, L Yan - Applied Soft Computing, 2011 - Elsevier
Computer applications in non-traditional area have put requirement on conceptual data
modeling. Some conceptual data models, being the tool of design databases, have been …

Modeling fuzzy information in UML class diagrams and object-oriented database models

ZM Ma, L Yan, F Zhang - Fuzzy Sets and Systems, 2012 - Elsevier
Conceptual data modeling has become essential for non-traditional application areas. Some
conceptual data models have been proposed as tools for database design and object …

Complex object comparison in a fuzzy context

N Marın, JM Medina, O Pons, D Sánchez… - Information and software …, 2003 - Elsevier
The comparison concept plays a determining role in many problems related to object
management in an Object-Oriented Database Model. Object comparison is appropriately …

Data summarization in relational databases through fuzzy dependencies

JC Cubero, JM Medina, O Pons, MA Vila - Information Sciences, 1999 - Elsevier
In this paper we deal with the problem of treating with dependencies in relational databases
which do not hold in an exact manner as classical functional dependencies but in a weaker …