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About 2,543 papers for “object-oriented databases”

Object-oriented databases

Deborah Jing-Hwahwang February, Deborah Jing-hwa Hwang, Deborah Jing-hwa Hwang · Choice Reviews Online · 1991

Object-oriented databases havebeendeveloped to allow applications to store persistent data in the form of objects. As in conventional databases, object-oriented databases need to support queries that allow associative access to data by describing a property of the data of interest. In particular, they should support queries over user-defined sets based on user-defined functions that compute the propertyofinterest. Tomakesuch function-based queries run faster, wemust support function-based indexes where the keys are these computed properties. Function-based indexes are harder to maintain than indexes in conventional databases because mutations that affect keys can be done without accessing an element of the indexed set.

Cited by 103

Object-oriented databases

Petry, Fred E, Nahouraii, Ez · CERN Document Server (European Organization for Nuclear Research) · 1991

Cited by 0

Object Oriented Databases

Erik Olsson, Örjan Nordkvist · 2014

Abstract: This report sets out to put the finger on and contrast the strengths and weaknesses of two different technologies of database management, relational database management systems (RDBMS) vs. object-oriented database management systems (ODBMS). The ODBMS is the youngest of the two and has had great success in challenging the overwhelming dominance of RDBMS in many areas concerned with complex data, e.g. computer aided design, software engineering, multi-media etc. The virtue of ODBMSs is their ability to provide a persistent storage for all kinds of objects. These objects can be created in most of the popular object oriented programming languages and can then be stored and manipulated in a safe manner in an ODBMS. The areas, or parts of areas, where RDBMSs are the stronger are concerning solidity of data model foundation, experience, set standards, query optimization, concurrency control locks, support for views, support for security, suitability for on-line transaction processing. Both types of DBMSs are continuously extending their capabilities towards a common goal using different techniques. Whether one will become the sole dominant or if the two will have their own niches of the market is too early to say. 1

Cited by 0

Object-Oriented Databases

GUERRINI, GIOVANNA, I. Merlo, E. Ferrari et al. · CINECA IRIS Institutial Research Information System (University of Genoa) · 1999

Cited by 0

Object Oriented Geographic Databases

Komloši, Juraj · Brno University of Technology Digital Library (Brno University of Technology) · 2010

Tato práce demonstruje použití objektově orientovaných geografických databází. Vychází z geografických informačních systémů. Popisuje jejich základní vlastnosti a možnosti použití v praxi. V práci jsou popsány základní vlastnosti a metody objektově orientovaného použití. Ty jsou demonstrovány na geografických informačních systémech. Je zaveden pojem objektově orientovaný rastr a objektově orientovaný vektor a způsob uložení jednotlivých prvků v objektově orientované databázi. Návrh způsobu ukládání dat do geografické objektově-orientované databáze je podložen případovou studií.

Cited by 0

Querying object-oriented databases

Won Kim · 1992

One major source of confusion, and consequent c&i-cisms, about object-oriented databases has been the lack of a comprehensive model of queries. Although there is a reasonable degree of agreement about an object-ori-ented data model, few operational systems support a query model for object-oriented databases. In this paper, we present a rather comprehensive query model which is consistent with object-oriented concepts embodied in the object-oriented data model. The model takes into ac-count the semantics of the class hierarchy and nested ob-jects, and as such is inherently richer than the relational or nested relational model of queries. A significant sub-set of the model has been cast into a query language which is supported in the ORION object-oriented database sys-tem. 1.

Cited by 0

Conceptual Modeling for Fuzzy Object Oriented Conceptual Modeling for Fuzzy Object Oriented Conceptual Modeling for Fuzzy Object Oriented Conceptual Modeling for Fuzzy Object Oriented Databases Databases Databases Databases

Puja Shrivastava, Laxman Sahoo · 2014

This technological era is raising new challenges towards the storage and management of data, that is getting more complex and imprecise with the evolution of utilization of computer engineering in most of the areas of society. To confront the arising challenges, database researchers has introduced fuzzy object oriented databases, by blending the concepts of database management system, object oriented data modeling and fuzzy techniques. This paper approaches to define and standardize the conceptual modeling for the fuzzy object oriented databases and recognize the scope of their application in the fields of science, engineering, agriculture, spatial, astronomical, environmental and medical sciences.

Cited by 0

From Object-Oriented to Aspect-Oriented Databases

Awais Rashid, Elke Pulvermueller · 2000

Over the recent years aspect-oriented programming (AOP) has found increasing interest among researchers in software engineering. Aspects are abstractions which capture and localise cross-cutting concerns. Although persistence has been considered as an aspect of a system aspects in the persistence domain in general and in databases in particular have been largely ignored. This paper brings the notion of aspects to object-oriented databases. Some cross-cutting concerns are identified and addressed using aspects. An aspect-oriented extension of an OODB is discussed and various open issues pointed out.

Cited by 0