How to write DDL commands to support data analysis by specific columns?

Question

Hi Solos!!

I have been getting a lot of support here and get to learn to fix endless errors writing my sql queries. Thank you so much!!

I have created a database for a repair business. It has all the tables required with all the column with required data types and data is stored in each table.

The star schema needs to support the analysis or measurement of material price by suppliers, date, and jobs.
How do I begin writing my DDL commands. Completely lost please help!

Answer 1

To support data analysis by specific columns in your repair business database, you can start by structuring your star schema with the necessary dimensions and facts. Begin by creating dimension tables for suppliers, date, and jobs, each containing relevant columns for analysis.

Next, establish a fact table that stores material price data along with foreign keys linking to the dimension tables. Ensure data types are appropriately defined for each column to facilitate efficient querying and analysis. By organizing your schema this way, you enable focused analysis on material prices by specific dimensions, empowering data-driven insights for your repair business.