I need an explanation for this MySQL question to help me study.

1. Data Warehouse:
   • Create a data warehouse database, including the fact and dimension tables (star schema).
   • Create the schema for each table.
   • Populate the tables using either ETL (Pentaho) or SQL (PostgreSQL).
2. Preprocessing for SAS:
   • Extract data from the data warehouse, creating a file for input into SAS. The format of the file is your choice. Ensure SAS University Edition accepts your selected format.

You should use the plan formulated in Milestone 1 of Module 3 for the detailed steps you intend to follow. ( I uploaded a file to show what I did in module 3)

For this milestone assignment, you are expected to submit:

• Screenshots of the populated data warehouse
• Star schema design, either a drawing or screenshot
• Row counts for the fact and dimension tables
• Brief description of your key learnings from completing this assignment