스터디모드 10문제 진행중

문제를 풀지않고 휴식하면서 학습할 수 있는 모드입니다.

0%

1. A is a relation with cardinality 3 and degree 5 and B is relation with cardinality 4 and degree 2. When we combine relation A and B by the cartesian product, what relation does come out?

  • 1
    cardinality 4 and degree 2

  • 2
    cardinality 3 and degree 5

  • 3
    cardinality 7 and degree 10

  • 4
    cardinality 12 and degree 7
--:--
오류 내용 신고