Do Not Assume Perfect Parity
Features such as SQL dialect support, explain behavior, schema tooling, and import/export semantics can vary by engine.
Validate Critical Workflows Per Engine
If a workflow is high-risk or performance-sensitive, verify it with the actual engine your team uses instead of assuming that one successful test generalizes cleanly.
Keep Notes Close To Operations
Reference notes are most useful when they explain how the difference changes real operator behavior, not just that the engines are technically different.