Normalize a flat invoice table into a fully normalized schema

A medium Data Modeling interview practice problem on DataDriven. Write and execute real data modeling code with instant grading.

Domain

Data Modeling

Difficulty

medium

Problem

Normalize a flat invoice table into a fully normalized schema. Create separate tables for customers, invoices, and invoice line items with proper keys and relationships.

Practice This Problem

Solve this Data Modeling problem with real code execution. DataDriven runs your solution and grades it automatically.