Advanced

SQL vs NoSQL: Choosing a Data Store

The choice is not relational versus modern. It is whether your access patterns are known and your data relational, in which case a relational database is almost always right, or whether one specific property (scale-out writes, a flexible document shape, traversal) dominates enough to give up joins and transactions for it.

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RELATED CONCEPTS

Dimensional Modeling and Slowly Changing Dimensions Consistency, CAP and What Your Workflow Actually Needs Query Optimization and Execution Plans Lakehouse, Delta and the Medallion Architecture The Ontology (Semantic Layer)

LESSONS THAT TEACH THIS

Foundations of Forward Deployed EngineeringThree systems, three customer ids, and no mapping table16 min→

PRACTICE THIS IN REAL QUESTIONS

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