Have you worked with SQL? Designed databases?

Yes, I have worked with SQL at various stages of projects — from writing queries to designing databases.

In analytics, I designed database structures, created ER diagrams, normalized tables for data storage optimization and integrity.

I wrote complex queries for data retrieval, aggregation, and analysis, optimizing them with indexes and execution plan explanations.

I also participated in data migrations and integrations between systems, which required a deep understanding of database architecture and business logic.