This is the latest version of the course book for the Certified Data Vault Data Modeler CDVDM course. The CDVDM certification course is managed and delivered by Genesee Academy, LLC and its international training partners. This version includes updated materials for Big Data integration, expanded UOW (unit of work), Ensemble Modeling, and new Link and Satellite definitions and variations.Data Vault modeling is a form of Data Modeling optimized for Agile Data Warehousing and Business Intelligence DWBI programs. As a form of Ensemble Modeling, the Data Vault approach is based on the Unified Decomposition pattern. This pattern models Core Business Concepts (main entities, similar to business dimensions or enterprise business concepts) using multiple component parts. This separates the things that change (context, descriptions, states, ratings and status for example) from the things that don't change (business keys, status descriptors and core relationships for example). The result is a highly scalable, adaptable, and traceable data store that can capture all data over time with complete historization.