Data Warehousing Skill

Master dimensional data modeling for business intelligence, including star schema design, slowly changing dimensions, and modern data warehouse patterns.

Quick Start (5 minutes)

DIMENSIONAL MODELING BASICS

1. Identify the business process (e.g., Sales)
2. Declare the grain (one row = one order line)
3. Choose dimensions (Who, What, When, Where)
4. Identify facts (measures: quantity, amount, cost)

Core Concepts

Star Schema Structure