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Lessons (5)

• Normalization & Denormalization

  Learn 1NF, 2NF, 3NF and BCNF with one concrete order example, then decide when a controlled denormalized read …

• Batch vs Stream and Data Modeling

  Choose when work runs and shape data for correctness first, then deliberately denormalize proven read bottlenecks. ![Batch runs …

• Database Internals, Replication and Scaling

  … Materialized views and denormalized projections speed known reads but need refresh/freshness rules. Compression saves storage/network at …

• CQRS & Event Sourcing

  … fast, denormalised, eventually consistent. - Event sourcing: store every change as an immutable event; current state = replaying events. - You …

• DBMS Foundations, Keys & Normalization

  … Normalized tables protect correctness; a read-heavy path may use a controlled denormalized projection. ![Interview map: keys identify …