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Doctoral Thesis
DOI
https://doi.org/10.11606/T.45.2011.tde-29072011-121444
Document
Author
Full name
Helves Humberto Domingues
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2011
Supervisor
Committee
Kon, Fabio (President)
Almeida Junior, Jorge Rady de
Camolesi Junior, Luiz
Finger, Marcelo
Guerra, Eduardo Martins
Title in Portuguese
Replicação assíncrona em bancos de dados evolutivos
Keywords in Portuguese
Banco de Dados Evolutivos
Métodos Ágeis
Refatoração
Replicação de Dados
Abstract in Portuguese
A modelagem evolutiva de bancos de dados é necessária devido às frequentes mudanças de requisitos das aplicações. O desafio é ainda maior quando o banco de dados tem de atender simultaneamente a várias aplicações. A solução proposta por Scott Ambler para evolução utiliza refatorações e define um período de transição, durante o qual tanto o esquema antigo quanto o novo coexistem e os dados são replicados por meio de um processo síncrono que apresenta várias dificuldades, como a interferência no funcionamento normal das aplicações. Para minimizar essas dificuldades, esta tese propõe um processo assíncrono para manter atualizados esses esquemas e apresenta um protótipo de uma ferramenta para auxiliar as evoluções dos bancos de dados. A proposta foi validada por meio de um experimento em laboratório que comparou a solução aqui apresentada com a proposta por Ambler.
Title in English
Asynchronous Replication in Evolutionary Databases
Keywords in English
Agile Methods
Data Replication
Evolutionary Database
Refactoring
Abstract in English
Evolutionary database modeling is necessary due to the frequent changes in application requirements. The challenge is greater when the database must support multiple applications simultaneously. The solution for evolution proposed by Scott Ambler is refactoring with a transition period, during which both the old and the new database schemas coexist and data is replicated via a synchronous process, what brings several difficulties, such as interference with the normal operation of applications. To minimize these difficulties, this thesis proposes an asynchronous process to keep these schemas updated and presents a prototype tool to evolve databases. The proposal was validated by a laboratory experiment in which the solution presented here was compared with the one proposed by Ambler.
 
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tese.pdf (6.34 Mbytes)
Publishing Date
2011-11-08
 
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