Transactional reliability matters whenever you update operational data such as NiCE CXone interaction records, agent state changes, or audit events. Interviewers ask this to check whether you understand how a DBMS preserves correctness when multiple operations happen together.
Explain the four ACID properties in a relational DBMS: Atomicity, Consistency, Isolation, and Durability. You should describe what each property means, why it matters, and what could go wrong if it is missing. Use a simple PostgreSQL transaction example to show how ACID applies when multiple related updates must succeed or fail together.
Keep the answer practical rather than academic. A strong response should connect ACID to transaction control, concurrent users, rollback behavior, and data integrity in day-to-day SQL work.
