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

❓ Quiz Question

Aug 12, 2026

Quiz: What does "IaC" stand for in modern cloud infrastructure engineering?

Infrastructure as Code (IaC) enables provisioning and managing cloud infrastructure using declarative configuration files (e.g. Terraform, CloudFormation).

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❓ Quiz Question

Aug 30, 2026

Quiz: How does DELETE differ from TRUNCATE in relational database management?

DELETE removes rows individually with transaction log overhead; TRUNCATE resets data pages instantly without row triggers.

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❓ Quiz Question

Aug 30, 2026

Quiz: Which database isolation level prevents Dirty Reads but allows Non-Repeatable Reads?

Under Read Committed isolation, transactions can only view committed data, preventing uncommitted dirty reads.

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Backend Hub

… backend development — Flask, FastAPI, Django, REST APIs, databases and more.

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❓ Quiz Question

Aug 30, 2026

Quiz: What is the outcome of a SQL ROLLBACK statement during a transaction?

ROLLBACK reverts database modifications made since the last BEGIN TRANSACTION point.

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❓ Quiz Question

Aug 30, 2026

Quiz: What is a SQL Deadlock?

… when concurrent transactions acquire circular locks; database engines detect deadlocks and abort one of the transactions.

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❓ Quiz Question

Aug 30, 2026

Quiz: What is the purpose of the SQL EXPLAIN command?

EXPLAIN (or EXPLAIN ANALYZE ) shows how database engines execute queries, highlighting index usage and scan costs.

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Aug 30, 2026

Quiz: What is the difference between `makemigrations` and `migrate` in Django?

… migration files; migrate applies pending migrations to the database.

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