
This quiz bank contains a carefully designed set of SQL interview questions used in real hiring processes for developer, data analyst and IT positions. The test covers essential SQL concepts such as relational models, data manipulation (DML), data definition (DDL), joins, subqueries, aggregation, window functions, indexing strategies and performance considerations. You will practice questions frequently asked in interviews, helping you identify weak areas and prepare confidently for real technical assessments.
- Teacher: José Manuel Domínguez Romero