Teach Cloud - Cloud, DevOps, and Python Backend Development Blog

❓ Quiz Question

Aug 30, 2026

Quiz: What is the OpenAPI Specification (formerly Swagger)?

The OpenAPI Specification standardizes API documentation, client SDK generation, and mock server creation.

#REST API & Web Services #Quiz #Interactive

❓ Quiz Question

Aug 30, 2026

Webhooks eliminate inefficient periodic API polling by transmitting event notifications immediately via HTTP POST endpoints.

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❓ Quiz Question

Aug 30, 2026

GraphQL enables clients to construct precise queries, preventing transfer of unnecessary payload attributes common in fixed REST responses.

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❓ Quiz Question

Aug 30, 2026

INNER JOIN excludes unmatched records; LEFT JOIN retains all records from the left table, populating NULLs for unmatched right table columns.

#SQL & Databases #Quiz #Interactive

❓ Quiz Question

Aug 30, 2026

Atomicity guarantees that all operations within a database transaction execute successfully, or the entire transaction is rolled back completely.

#SQL & Databases #Quiz #Interactive

❓ Quiz Question

Aug 30, 2026

A FOREIGN KEY ensures that values in a child table column match existing values in a referenced parent table primary key.

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❓ Quiz Question

Aug 30, 2026

COALESCE(val1, val2, fallback) evaluates arguments sequentially and returns the first non-null value encountered.

#SQL & Databases #Quiz #Interactive

❓ Quiz Question

Aug 30, 2026

… problem degrades performance by issuing excessive database round-trips; resolved using SQL JOINs or eager loading.

#SQL & Databases #Quiz #Interactive