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A database system architecture supporting coexisting query languages and data modelsHepp, Pedro E. January 1983 (has links)
Database technology is already recognised and increasingly used in administering and organising large bodies of data and as an aid in developing software. This thesis considers the applicability of this technology in small but potentially expanding application environments with users of varying levels of competence. A database system architecture with the following main characteristics is proposed: Database technology is already recognised and increasingly used in administering and organising large bodies of data and as an aid in developing software. This thesis considers the applicability of this technology in small but potentially expanding application environments with users of varying levels of competence. A database system architecture with the following main characteristics is proposed:Database technology is already recognised and increasingly used in administering and organising large bodies of data and as an aid in developing software. This thesis considers the applicability of this technology in small but potentially expanding application environments with users of varying levels of competence. A database system architecture with the following main characteristics is proposed : 1. It is based on a set of software components that facilitates the implementation and evolution of a software development environment centered on a database. 2. It enables the implementation of different user interfaces to provide adequate perceptions of the information content of the database according to the user's competence, familiarity with the system or the complexity of the processing requirements. 3. it is oriented toward databases that require moderate resources from the computer system to start an application. Personal or small-group databases are likely to benefit most from this approach.
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Analise de mutantes em aplicações SQL de banco de dados / Mutation analysis for SQL database applicationsCabeça, Andrea Gonçalves 15 August 2018 (has links)
Orientador: Mario Jino, Plinio de Sa Leitão Junior / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação / Made available in DSpace on 2018-08-15T03:59:29Z (GMT). No. of bitstreams: 1
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Previous issue date: 2009 / Resumo: O teste de aplicações de banco de dados é crucial para assegurar a alta qualidade do software, pois defeitos não detectados podem resultar em corrupção irrecuperável dos dados. SQL é a mais amplamente utilizada interface para sistemas de banco de dados. Nossa abordagem visa a alcançar testes efetivos pela seleção de bases de dados reveladoras de defeitos. Usamos a análise de mutantes em comandos SQL e discutimos dois cenários para aplicar as técnicas de mutação forte e fraca. Uma ferramenta para auxiliar na automatização da técnica foi desenvolvida e implementada. Experimentos usando aplicações reais, defeitos reais e dados reais foram conduzidos para: (i) avaliar a aplicabilidade da abordagem; e (ii) comparar bases de dados de entrada quanto à habilidade para detectar defeitos / Abstract: Testing database applications is crucial for ensuring high quality software as undetected faults can result in unrecoverable data corruption. SQL is the most widely used interface language for relational database systems. Our approach aims to achieve better tests by selecting fault-revealing databases. We use mutation analysis on SQL statements and discuss two scenarios for applying strong and weak mutation techniques. A tool to support the automatization of the technique has been developed and implemented. Experiments using real applications, real faults and real data were performed to: (i) evaluate the applicability of the approach, and (ii) compare fault-revealing abilities of input databases / Mestrado / Engenharia de Computação / Mestre em Engenharia Elétrica
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