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Idempotency and event-driven integration, measurable non-functional requirements, late changes, API contracts and versioning, data migration, availability math, normalization, HAVING, PATCH, dead-letter queues, scope creep, prototypes, diagrams, and acceptance testing.
Use case flows, include and extend, BPMN pools, lanes, and gateways, one-to-many keys, COUNT DISTINCT, joins and grouping, status codes and JSON, synchronous calls, MoSCoW, conflicting stakeholders, traceability, and as-is models.
The need behind a request, types of requirements, user stories and acceptance criteria, interviews, BPMN symbols, primary keys, a simple SELECT, and HTTP methods.
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