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The generic two-level data warehouse architecture includes which of the following?

  • A.At least one data mart
  • B.Data that can extracted from numerous internal and external sources
  • C.Near real-time updates
  • D.All of the above.

Answer: B

Correct answer: Data that can extracted from numerous internal and external sources

The two-level architecture is the simplest: operational sources feed the warehouse directly, and users query it. Data marts belong to the three-level architecture, and near real-time updating to the active warehouse - both later refinements of this basic arrangement.

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