Master Dimension Tables and Slowly Changing Dimensions for Data Warehousing
Learn all about dimension tables and slowly changing dimensions (SCDs) in this comprehensive guide for data engineers and data analysts. Master how to model and manage dimension tables within your data warehouse to unlock valuable insights. Discover the difference between dimension and fact tables, explore various types of SCDs (Type 1, 2, and 3), and gain practical knowledge through example interview questions and answers. Perfect for anyone looking to enhance their data modeling and management skills.
Chapters:
00:00 Introduction
00:24 Gambill Data Engineering
00:41 What are Dimension Tables?
01:02 Fact Tables vs Dimension Tables: Deriving Data-Driven Decisions
02:37 Understanding Slowly Changing Dimensions (SCDs)
03:00 Type 1 SCD (Slowly Changing Dimension)
03:36 Type 2 SCD
04:21 Type 3 SCD
04:55 Example Interview Questions and Answers for SCDs (Slowly Changing Dimension)
05:49 #2 Example Interview Question
06:42 Share your experiences!
06:56 Closing
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