#WOW2025 | Week 20 | Let’s Practice Multi-fact Relationship Data Model

Introduction In this challenge, we will explore the Multi-Fact Relationship Data Model feature introduced in the 2024.2 version. This feature enables us to seamlessly connect and analyze multiple fact tables within a single data source. It’s exciting as a Tableau datasource can behave like a small database! Here are some materials for those who are …

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2025 Week 20 | Year-over-Year Selected Metric Trends

Introduction Welcome to Week 21 of 2025! This report allows users to select a performance metric (e.g., Revenue) and compare its values across 2024 and 2023. It provides a flexible way to explore year-over-year changes and spot trends or anomalies through interactive visuals. Good luck! -Andrei Requirements Main Visual: Area Chart with Year-on-Year Comparison Green …

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2025 Week 18 | Sigma: Can You Re-imagine This Map?

Can you re-imagine this influential map? Introduction In 1854, Dr. John Snow mapped cholera deaths in London to investigate how the disease was spreading. At the time, most believed cholera came from “bad air.” Snow used mapping to reveal a strong cluster of deaths around a single water pump on Broad Street, proving that contaminated …

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