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
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