4866. Spatial Data: geographic data migration — Reduce cost/latency while preserving semantics. — subscription billing — Java Spring/JDBC

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

Scenario: A subscription billing application must handle geographic data migration. Reduce cost/latency while preserving semantics. 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

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Option 1: Disable database protections and repair inconsistent rows manually after geograp

Disable database protections and repair inconsistent rows manually after geographic data migration runs.

Additional Explanation

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

Verified

Option 2: Run geographic data migration without defining transaction boundaries, retry beh

Run geographic data migration 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 3: Use a parameterized, transaction-aware MySQL 8 implementation for geographic dat

Use a parameterized, transaction-aware MySQL 8 implementation for geographic data migration, 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 4: Use unparameterized dynamic SQL and rely only on application-side validation for

Use unparameterized dynamic SQL and rely only on application-side validation for geographic data migration.

Additional Explanation

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