different between antijoin vs antidivision

English

anti- +? join

antijoin (plural antijoins)

(algebra, databases) A type of join, denoted by ?, such that R?S yields only those tuples in R for which S has no corresponding tuple of the same value.

anti- +? division

antidivision (not comparable)

antidivision (uncountable)

(algebra) A particular extension of the antijoin operator.
- 2008, Patrick Bosc, Olivier Pivert, A Family of Tolerant Antidivision Operators for Database Fuzzy Querying Book Series
- 2008, Sergio Greco, Thomas Lukasiewicz, Scalable uncertainty management
  It can be noticed that an antidivision is nothing but an antijoin followed by a projection over X […]

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