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  • Database training

3.6.04. Query and snapshot

  • Query + database snapshot returns one set of actual data
    • but a query alone defines a powerset of possible data
  • Load
    • Metrics for query performance
    • Time is easy to measure
    • Load is better in the real world
      • Query might be fast to execute, but require a lot of memory
‹ 3.6.03. Domains and setsup3.6.05. Design in context ›
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