Why? Because the is the gold standard reference for data management. It is the definitive guide for anyone looking to understand data governance, data architecture, data quality, and more. However, the official PDF comes with a significant price tag (typically over $70-$90 USD). Consequently, many users turn to GitHub, hoping to find a free, shared copy.
The official DMBOK2 PDF from Technics Publications (the publisher) costs approximately $89 USD. The printed version is often over $100. For students or professionals in developing countries, this is a substantial barrier. dama-dmbok pdf github
Go to GitHub.com and search dama-dmbok (without "pdf"). and more. However