Master Data Modeling Concepts
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Questions and Answers

Which of the following is true about a data model?

  • It only describes the structure of a database
  • It only specifies constraints for a database
  • It describes the structure of a database, the operations for manipulating these structures, and certain constraints that the database should obey (correct)
  • It only describes the operations for manipulating database structures
  • What are constructs used for in a data model?

  • To define the operations for manipulating database structures
  • To define the constraints for a database
  • To define the data types for a database
  • To define the database structure (correct)
  • What is the purpose of constraints in a data model?

  • To allow for invalid data to be stored in the database
  • To specify some restrictions on valid data that must be enforced at all times (correct)
  • To define the data types for the database
  • To restrict access to the database
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