[03/Dnieper/02]

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Questions and Answers

What type of keys are used for hubs in the logical model?

  • Composite keys
  • Business keys (correct)
  • Foreign keys
  • Primary keys

What type of data flow is defined in load definitions for entities and attributes in a data-driven model?

  • Random
  • From logical model to source
  • Bi-directional
  • From source to logical model (correct)

What do link references in the logical model refer to?

  • Primary keys
  • Hubs (correct)
  • Satellites
  • Foreign keys

Logical models in a data-driven model are not loaded from any source entity or attribute.

<p>False (B)</p> Signup and view all the answers

In the logical model, link references are references to satellites.

<p>False (B)</p> Signup and view all the answers

Business keys are used for hubs in the logical model.

<p>True (A)</p> Signup and view all the answers

Match the following terms with their descriptions in the logical model:

<p>Hubs = Entities representing core business concepts with business keys Links = Entities connecting hubs and satellites with reference to hubs Satellites = Entities containing descriptive data and tracking rate of change Business keys = Unique identifiers for hubs in the logical model</p> Signup and view all the answers

Match the following with their role in data-driven logical model:

<p>Source entity = Provider of entities in the data-driven model Source attribute = Provider of attributes in the data-driven model Data flow = Specification of the movement of data from source to logical model Load definitions = Define the process of loading entities and attributes from sources</p> Signup and view all the answers

Match the following with their usage in the logical model:

<p>Descriptive data = Includes security/privacy/rate of change classifications Dependent child/transaction IDs = Used as keys for non-historized or dependent child data Link references = References to hubs in links Data-driven model = Has a source of data for the model and defines the data flow</p> Signup and view all the answers

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