النمذجة وفق الاستعلامات

في هذا الدرس

design data from the questions, and relate it to CAP and PACELC.

الموضوعات المخطط لها

• Relational: model the facts, normalize, query anything later. NoSQL: list the queries first, shape the data for them.
• Trade-off: speed and scale for known queries versus flexibility for unknown ones.
• "Schemaless" does not mean no schema: the schema lives in your code, and migrations are your job.
• CAP: during a network partition choose consistency or availability. PACELC: else (no partition), choose latency or consistency. Verify each product's actual defaults before claiming them.