Assertion: algebra's set | /r/HasProperty | n
Facets:
Source sentences:
text: The result of such projection is defined as the set that is obtained when all tuples in R are restricted to the set { a 1 , … , a n } {\displaystyle \{a_{1},\ldots ,a_{n}\}} .
text: where {a 1 ,...,a n } is the set of attribute names unique to R and t[a 1 ,...,a n ] is the restriction of t to this set.