Database Fundamentals and SQL Literacy Questions

Core relational database concepts and basic SQL literacy. Covers database objects such as tables, rows, and columns, primary keys and foreign keys, relationships and referential integrity, simple schema design concepts and normalization, indexing basics and their effect on performance, transactions and basic consistency concepts, and reading and interpreting simple SQL queries including SELECT JOIN GROUP BY and COUNT. This topic assesses whether a candidate understands how data is stored and related and can translate simple business questions to database queries.