Elvis Picardo is a regular contributor to Investopedia and has 25+ years of experience as a portfolio manager with diverse capital markets experience. Yarilet Perez is an experienced multimedia ...

Is This Currency Overvalued? Purchasing Power Parity (PPP) and Long-Term FX Valuation Commodity correlation isn’t static—and ignoring that can blow up your portfolio. Learn how to track it and adjust ...

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This project is based on a retail store database. The main goal was to understand customer behavior, sales performance, product categories, and returns using SQL.