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dimensional-data-warehouse's Introduction

Repo description:

-This is a data warehouse OLAP system created from distributed OLTP system.

-The DW Snowflake schema in the ER diagram shows the dependent dimensions.

-The OLAP dimensional Star schema has a fact table with composite primary key consist of (orderId, ItemId)


This repo contains:

  • Generated dimension date table by TSQL
  • TSQL queries that define the star schema.
  • ER diagram for Star and Snowflake models.
  • Ad-hoc queries for data discovery.
  • Stored Procedure and Views for advanced insights.
  • UAT Quality for data Validity, accuracy and integrity.
  • Copy pipeline to copy tables from SQL server to Parquet in ADLS.
  • Power BI report for revenue by region, Year and month for each Product-category.

ER diagram


ER diagram


ER diagram

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