Relational databases have a strong procedural orientation Relational databases

Relational databases have a strong procedural

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Relational databases have a strong procedural orientation (*) Relational databases are simple to understand. Correct 10. A/an _________ is a piece of information that in some way describes an entity. It is a property of the entity and it quantifies, qualifies, classifies, or specifies the entity. Mark for Review (1) Points Process
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Attribute (*) Table ERD Correct 11. In a physical data model, a relationship is represented as a combination of: (Choose Two) Mark for Review (1) Points (Choose all correct answers) Foreign Key (*) Primary Key or Unique Key (*) Column Check Constraint or Unique Key Incorrect. Refer to Section 2 Lesson 4. 12. In a physical data model, an attribute is represented as a/an Mark for Review (1) Points Row Instance Column (*) Foreign Key Incorrect. Refer to Section 2 Lesson 4. 13. An ERD is an example of a Physical Model. True or False? (1) Points True
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False (*) Correct 14. Data modeling is performed for the following reasons: (Choose Two) Mark for Review (1) Points (Choose all correct answers) The ERD becomes a blueprint for designing the actual system. (*) It helps discussions and reviews. (*) We do not need datamodels; we can just start coding right away. We draw an ERD solely to please the users; once completed, the ERD is never referred to again as it serves no purpose in the real world. Correct 15. The Physical Model is derived from the Conceptual Model. True or False? (1) Points True (*) False Correct
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  • Spring '17
  • Andi M.Kom

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