Indexes for Necessity Queries. Implementation and Performance Evaluation on a Fuzzy Object-Relational Database Management System

2018 ◽  
Author(s):  
Juan Miguel Medina ◽  
Carlos D. Barranco ◽  
Olga Pons
Keyword(s):  
Performance Evaluation ◽  
Relational Database ◽  
Management System ◽  
Database Management ◽  
Database Management System ◽  
Relational Database Management System ◽  
Object Relational ◽  
And Performance ◽  
Relational Database Management

Towards a Fuzzy Object-Relational Database Model

2011 ◽  
pp. 435-461 ◽  
Author(s):  
Carlos D. Barranco ◽  
Jesús R. Campaña ◽  
Juan M. Medina
Keyword(s):  
Relational Database ◽  
Management System ◽  
Database Management ◽  
Relational Databases ◽  
Database Management System ◽  
Data Types ◽  
Relational Database Management System ◽  
Database Model ◽  
Object Relational ◽  
Relational Database Management

This chapter introduces a fuzzy object-relational database model including fuzzy extensions of the basic object-relational databases constructs, the user-defined data types, and the collection types. The fuzzy extensions of these constructs focus on two main flexible aspects, a way to flexibly compare complex data types and an extension of collection types allowing partial membership of its elements. Collection operators are also adapted to consider flexibly comparable domains for its elements. Such a fuzzy object-relational database model, and its implementation in a fuzzy object-relational database management system, provides an easy and effective way to manage a great amount of complex fuzzy data in object-relational databases for emerging fuzzy applications. As a sample of the proposal advantages, an application for dominant color based image retrieval, which is built on an object-relational database management system implementing the proposed fuzzy database model, is introduced.

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