crow's foot

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See also: crow's feet


The crow's-foot notation indicates that an author can write several books, and a book can be written by several authors.


crow’s foot

  1. (sewing) A triangular embroidery stitch.
  2. (databases) A symbol, resembling a bisected equilateral triangle, used in database diagrams to indicate plurality.
    • 1999, Robert J Muller, Database Design for Smarties
      The crow's-foot notation similarly represents relationships.
    • 2007, Geoff Coffey, Susan Prosser, Filemaker Pro 9: The Missing Manual‎
      Each crow's foot in your ER diagram indicates the need for a foreign key.
  3. A caltrop.