نتایج جستجو برای: relational database
تعداد نتایج: 293759 فیلتر نتایج به سال:
A major goal for database research has been the incorporation of additional semantics into database models. It is recognized that the relational database model has semantic and structured drawbacks when it comes to modeling some emerging applications such as computer aided design (CAD), geographical information systems (GIS), and artificial intelligence. In response to this problem, some attemp...
A novel approach is proposed. This approach maps a relational database defined by a relational schema to an ontology. The ontology has a hierarchical structure, and it is no longer “impaired” by optimization and bad database design of the relational schema. The approach can be used for migrating HTML pages (especially those that are dynamically generated from a relational database) to the ontol...
IntroductIon Modeling techniques play an important role in the development of database applications. Well-known entity-relationship modeling and its extensions have become a widely-accepted approach for relational database conceptual design. An object-oriented approach has brought a new view of conceptual modeling. A class as a fundamental concept of the object-oriented approach encapsulates bo...
Object-relational databases will replace relational systems to become the next great wave of databases because they combine traditional database characteristics with object-oriented principle. So, it is fundamental to propose metrics for control the quality of this kind of databases. But metrics definition must be done in a methodological way, it is necessary to follow a number of steps for ens...
This project involves comparing two relational database servers using sections of the AS3AP industry standard benchmark. The two servers tested were Oracle 8.0.3, developed by the Oracle Corporation and MySQL 3.22.14b-gamma, developed by T.c.X DataKonsultAB. The servers were both installed on the same Intel-based hardware platform running the Red Hat Linux 5.2 operating system (kernel 2.0.36). ...
IntroductIon Modeling techniques play an important role in the development of database applications. Well-known entity-relationship modeling and its extensions have become a widely-accepted approach for relational database conceptual design. An object-oriented approach has brought a new view of conceptual modeling. A class as a fundamental concept of the object-oriented approach encapsulates bo...
In this paper we present a method of decomposing a neutrosophic database relation with Neutrosophic attributes into basic relational form. Our objective is capable of manipulating incomplete as well as inconsistent information. Fuzzy relation or vague relation can only handle incomplete information. Authors are taking the Neutrosophic Relational database [8], [2] to show how imprecise data can ...
XML is the abbreviation for Extensible Markup Language. This is an open and popular standard for marking up text in a way that is both machine and human readable. By “marking up text” we mean that the data in the text files is formatted to include meaningful symbols that communicate to a reader what that data is for. The syntax of XML is similar in style to HTML, the markup language of the Worl...
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