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Walmart

Senior Software Engineer

SQL vs NoSQL trade-offs

Medium

Round 3 (Microservices & DevOps)system_designCandidate Selected

Databases SQL NoSQL

SQL vs NoSQL: What are the differences, and when should each be used?

This question was asked in

Walmart Senior Software Engineer Interview Experience

The interview process at Walmart consisted of five comprehensive technical rounds covering a broad range of topics. Across the rounds, the candidate was evaluated on Core Java & Concurrency, Spring Boot internal mechanics, Microservices architecture and DevOps practices, SQL queries and indexing, and Low-Level System Design (LLD). Overall, the process was thorough with a medium-to-hard difficulty level, heavily focusing on deep technical understanding, concurrency, and SOLID principles.