SQL Performance: Strengths: "Showed a good grasp of simple SQL queries, such as SELECT, WHERE, JOIN operations." "Wrote simple queries to select and filter data successfully." "Grasped basic database design concepts." Areas for Improvement: "Was weak with more advanced queries that included subqueries, window functions, or optimization for performance." "Needs better grasp of indexing and query execution plans." "Requires additional practice with complex join operations and aggregation of data." "Difficulty with explanation of transaction management and isolation levels."