Pergunta de entrevista da empresa Creditsafe Technology

SQL – CRUD, DDL vs DML, OLTP vs OLAP, UNION vs UNION ALL, datatype conversions, joins, subqueries, group by, order by, aggregate/CASE queries.how to reduce expensive DB calls . Python/Java – data structures (list/tuple/set/dict), list ops, functions, DB operations, OOPs,JWT/session management System Design – movie DB schema (tables & relationships). data engineering concepts, tools, downtime reduction. LLMs basics, prompt design, ChatGPT usage, Overall: A mix of coding, theoretical, and conceptual questions with strong emphasis on SQL and databases.