A field that contains a Yes or No (True or False). Boolean data may be stored as one byte or as little as one bit (1 or 0).
"Boolean data." YourDictionary, n.d. Web. 17 May 2018. <http://www.yourdictionary.com/boolean-data>.
Boolean data. (n.d.). Retrieved May 17th, 2018, from http://www.yourdictionary.com/boolean-data