Customer records were stored without a unique identifier, and now there are duplicates
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
Customer records were stored without a unique identifier, and now there are duplicates. Design a table structure that guarantees every row is unique.
Practice This Problem
Solve this Data Modeling problem with real code execution. DataDriven runs your solution and grades it automatically.