Dbms
Mostrando 13-24 de 41 artigos, teses e dissertações.
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13. Extensão de um SGBD para incluir o gerenciamento da informação temporal. / Extension of a DBMS to include the management of temporal information.
O fator temporal é uma variável natural da maioria dos sistemas de informação, pois no mundo real os eventos ocorrem de maneira dinâmica, modicando continuamente os valores dos seus objetos no decorrer do tempo. Muitos desses sistemas precisam registrar essa modicação e atribuir os instantes de tempo em que cada informação foi válida no sistema. Es
Publicado em: 2007
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14. Gestão municipal com o uso de geotecnologias / Municipal administration with use of geothecnologies
This paper has the purpose of presenting procedures for planning and implementing a Municipal Geographic Information System (GIS) with an emphasis on the precision, exactness, reliability, safety, and interoperability of the data and geographical information. The methodologies and techniques for elaborating a Digital Cartographic Base with a topological stru
Publicado em: 2007
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15. MeGIQ - Metodologia de GeraÃÃo de InformaÃÃes de Qualidade para a Tomada de DecisÃo Executiva
The executive decision making is the main challenge of managers in modern enterprises. Decisions are extremely critical activities in organizations that live in permanent process of mutation. Decision should be made in a short period of time because of the dynamic of the world. Decision-makers need to have more experience, information and methodology than in
Publicado em: 2007
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16. DBSitter-AS: um Framework Orientado a Agentes para ConstruÃÃo de Componentes de Gerenciamento AutÃnomo para SGBD
A ComputaÃÃo AutÃnoma à uma Ãrea de pesquisa que busca o desenvolvimento de software capaz de autoconfiguraÃÃo, auto-otimizaÃÃo, autoproteÃÃo, auto-reparaÃÃo, autoconhecimento e antecipaÃÃo de necessidades, utilizando-se de padrÃes abertos. No caso particular de Sistemas de Gerenciamento de Bancos de Dados (SGBD), podemos resumir esses princ�
Publicado em: 2007
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17. Análise e desenvolvimento de um novo algoritmo de junção espacial para SGBD geográficos / Analysis and design of a new algorithm to perform spatial join in geographic DBMS
Um Sistema de Informação Geográfica armazena e mantém dados geográficos, combinando-os, para obter novas representações do espaço geográfico. A junção espacial combina duas relações de geometrias geo-referenciadas de acordo com algum predicado espacial, como intersecção e distância entre objetos. Trata-se de uma operação essencial, pois é
Publicado em: 2007
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18. Objective tests and their discriminating power in business courses: a case study
Evaluating students' learning experiences outcomes cannot be considered a simple task. This paper aims at investigating students' overall performance and the discriminating power of particular tests' items in the context of business courses. The purpose of this paper is to contribute with this issue while analyzing it, with scientific approach, from an accou
BAR - Brazilian Administration Review. Publicado em: 2005-12
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19. DBSitter: um sistema inteligente para gerencimaneto de SGBD
By analyzing the daily work of Data Base Administrators (ABD), we perceived that a large amount of problems (e. g. performance tuning, security and physical dimensioning) occur repetitively. Nonetheless, the professionals normally forget the best solution for them, especially when working under pressure. Remembering the correct solution may take a long time
Publicado em: 2005
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20. PrÃ-seleÃÃo e prÃ-carga de dados para bancos de dados mÃveis
One of the main goals of mobile data access is to reach the ubiquity inherent to the mobile systems: to access information regardless of time and place. Due to mobile systems restrictions such as, for instance, limited memory and narrow bandwidth, it is only natural that researchers expend efforts to soothe such issues. This work will approach issues regardi
Publicado em: 2005
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21. Indexing complex data in Generic Metric Domains. / Indexação de dados em domínios métricos generalizáveis
The DBMS were developed to manipulate data in numeric domains and short strings, not considering the manipulation of complex data, like multimidia data. The operators em data domain which requests for the total order property have no use to handle complex data. An operator class that fit well to handle this type of data are the similarity operators: range qu
Publicado em: 2005
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22. CRIAÇÃO AUTÔNOMA DE ÍNDICES EM BANCOS DE DADOS / AUTONOMIC INDEX CREATION IN DATABASES
The choice and materialization of indexes are activities commonly done by database administrators to speed up database application processing. Due to the complexity of the index selection task and to the pressure for productivity increase put on tuning professionals, many works on the literature and on commercial systems seek for tools that can help the DBA
Publicado em: 2004
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23. SIDATA - Sistema de IntegraÃÃo de Dados Apoiado no TAmino
This work introduces a System for Integrating Data based on Tamino (SIDATA). It highlights the developed architecture and a system prototype for data integration using concepts related to semantic web. The main characteristics of the system are the usage of XML for data representation and storage as well as ontology generated from semantic web premises. XML
Publicado em: 2004
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24. UMA ARQUITETURA PARA AUTO-SINTONIA GLOBAL DE SGBDS USANDO AGENTES / AN AGENT-BASED ARCHITECTURE FOR DBMS GLOBAL SELF-TUNING
The increasing complexity of the commercial DBMSs as well the workload they manage, besides the fact that many users do not have deep knowledge about database administration, among other reasons, strongly suggests the introduction of techniques that automates the database tuning process. Self- Tuning, or auto-tuning, is a feature that makes systems adaptable
Publicado em: 2004