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Database Questions and Answers

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1. A ______ is a collection of data that is stored electronically as a records in a table.
 
  • A. Database
  • B. Spreadsheet
  • C. Presentation
  • D. Web page
 
2. Which of the following types of table constraints will prevent the entry of duplicate rows?
 
  • A. Primary key
  • B. Unique
  • C. Null
  • D. Foreign key
 
 
3. In an ER diagram, attributes are represented by
 
  • A. Square
  • B. Ellipse
  • C. Triangle
  • D. Rectangle
 
4. Key to represent relationship between tables is called
 
  • A. Foreign key
  • B. Secondary key
  • C. Primary key
  • D. Composite key