March 2025
Intermediate to advanced
244 pages
5h 42m
Portuguese (Portugal, Brazil)
Content preview from Análise de dados moderna no Excel
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Capítulo 7. Criar modelos relacionais no Power Pivot
Este trabalho foi traduzido com recurso a IA. Agradecemos o teu feedback e comentários: translation-feedback@oreilly.com
O Capítulo 6 introduziu os fundamentos do Power Pivot como uma ferramenta eficaz para análise de dados e relatórios, especialmente quando trabalha com dados de várias fontes. Este capítulo oferece uma demonstração sobre como utilizar o Power Pivot para modelação de dados relacionais.
Ligar dados ao Power Pivot
Tal como realçou no Capítulo 6, o Modelo de Dados serve de base ao Power Pivot, facilitando a criação e gestão de relações de tabela para um cálculo e análise de dados eficazes. O Power Pivot simplifica esta tarefa com uma interface intuitiva de arrastar e largar. Este capítulo aprofunda o Modelo de Dados, utilizando o ficheiro ch_07.xlsx. Este ficheiro contém um conjunto de dados de vendas a retalho frequentemente referenciado na comunidade analítica e encontra-se na pasta ch_07 entre os recursos do livro.
No exemplo do Capítulo 6, o Modelo de dados foi predefinido. Neste capítulo, precisaremos de o definir manualmente.
Embora seja possível estabelecer ligações diretas a fontes de dados através do Power Pivot, recomenda-se que canalizes primeiro os dados através do Power Query. Esta abordagem fornece uma plataforma conveniente para estabelecer quaisquer procedimentos de limpeza de dados recorrentes nestas tabelas, quando necessário.
Para começar, importa a tabela orders para o Power Query utilizando ...
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