10 June 2025

139 Data Lake – evolution of ETL to ELT from traditional cleaning to flexible processing

Classic DWH – data warehouses, designed to store structured data in a format optimized for analytical queries, have faced limitations in handling unstructured data and scalability. […]
10 June 2025

148 Big data analyzing data from San Francisco’s million building permit dataset

Working with open datasets provides a unique opportunity to put into practice the principles discussed in previous chapters: judicious feature selection, representative sampling, visualization, and critical […]
169 Transformation roadmap from chaos to data-driven company
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