5323. Triggers & Events: trigger recursion prevention — Prove correctness with targeted queries and assertions. — messaging — Laravel Eloquent

DBMS Published 30 Sept 2026 Updated 30 Sept 2026 0 Views Verified

Scenario: A messaging application must handle trigger recursion prevention. Prove correctness with targeted queries and assertions. Explain the invariant, SQL strategy, transaction/locking behavior, failure handling, observability and test plan. Use MySQL 8-oriented syntax where applicable.

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Answer & Explanation

4 Answers

Verified

Option 1: Run trigger recursion prevention without defining transaction boundaries, retry

Run trigger recursion prevention without defining transaction boundaries, retry behavior, or production validation.

Additional Explanation

Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.

Verified Correct Answer

Option 2: Use a parameterized, transaction-aware MySQL 8 implementation for trigger recurs

Use a parameterized, transaction-aware MySQL 8 implementation for trigger recursion prevention, validate the invariant, and explicitly test concurrency, retries and recovery.

Additional Explanation

Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.

Verified

Option 3: Use unparameterized dynamic SQL and rely only on application-side validation for

Use unparameterized dynamic SQL and rely only on application-side validation for trigger recursion prevention.

Additional Explanation

Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.

Verified

Option 4: Disable database protections and repair inconsistent rows manually after trigger

Disable database protections and repair inconsistent rows manually after trigger recursion prevention runs.

Additional Explanation

Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.