2837. Multi-tenant: Find cross-tenant foreign-key mismatches. — C# ASP.NET + ADO.NET

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

In a multi-tenant module, solve this as a production problem using C# ASP.NET + ADO.NET: Find cross-tenant foreign-key mismatches. Provide the SQL, explain the logic, show safe application integration, and mention failure/edge cases.

Looking for the latest Sarkari Result 2026 updates? Check the latest government exam results, merit lists and result updates on Sarkari Resultess.

Answer & Explanation

4 Answers

Verified

Option A

DELETE FROM table_name;

Additional Explanation

Incorrect: it does not satisfy the stated business rule and can return/change unintended data.

Verified

Option B

SELECT * FROM table_name;

Additional Explanation

Incorrect: it does not satisfy the stated business rule and can return/change unintended data.

Verified Correct Answer

Option C

SELECT o.id FROM orders o JOIN customers c ON c.id=o.customer_id WHERE o.tenant_id<>c.tenant_id;

Additional Explanation

Tenant-aware foreign keys or application constraints should prevent cross-tenant references.

Verified

Option D

UPDATE table_name SET status='active';

Additional Explanation

Incorrect: it does not satisfy the stated business rule and can return/change unintended data.