This is a complete lesson on NoSQL databases, covering NoSQL concepts, characteristics, types, scalability, CAP theorem, advantages, challenges, and real-world applications. Ideal for Computer Science, ICT, IT Fundamentals, Database Systems, and AP CS–aligned courses. Designed to help students understand WHY NoSQL exists and WHEN it is used instead of relational databases, using clear comparisons, real-world scenarios, and industry-aligned examples. ────────── ⋆⋅☆⋅⋆ ────────── What’s Inc