Modelado Dimensional 4 Etapas
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The document discusses dimensional modeling best practices for a retail sales case study. It outlines a four-step process: 1) select the business process, 2) declare the grain, 3) choose dimensions, 4) identify facts. For the retail case, the process modeled is point-of-sale sales, with a grain of individual transactions. Key dimensions are date, product, store, and promotion. Facts include sales quantity, price, amount, and costs. The document also discusses design considerations like degenerate dimensions, extensibility, and surrogate keys.
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Universidad de Cantabria, Santander
http://personales.unican.es/gutierjm/docs/trans_DataMining.pdf
Informatica Pentaho Etl Tools Comparison
This document compares different ETL (extract, transform, load) tools. It begins with introductions to ETL tools in general and four specific tools: Pentaho Kettle, Talend, Informatica PowerCenter, and Inaplex Inaport. The document then compares the tools across various criteria like cost, ease of use, speed, and connectivity. It aims to help readers evaluate the tools for different use cases.
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Data Mining. Extracción de Conocimiento en Grandes Bases de Datos
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Modelado Dimensional 4 Etapas
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