Which of the following is wrong about domains of a relation?Question 29Select one:a.Two or more attributes can be defined on the same domainb.Two attributes that include values from different domains can easily be comparedc.A tuple can draw values from different domainsd.A pool of atomic values constitutes a domain

The elements of the domain of an attribute may be ordered pairs of values. True False0.5 pointsSome relations may not have a foreign key. True False0.5 pointsA foreign key in a relation should consist of exactly one attribute. True False0.5 pointsA foreign key in a relation R can NOT be used to refer to tuples in R itself. True False

Which of the following is not a domain in the three-domain system?

orrect answer__________ is a specific domain in the relation which has entries of all tuples.

Which of the statement below is not true about the relation{(1,3),(2,4),(3,5),(4,6)}{(1,3),(2,4),(3,5),(4,6)}?Select one:A.The domain is  {1,2,3,4}{1,2,3,4}.B.The relation is a function.C.The inverse of the relation is  {(3,1),(4,2),(5,3),(6,4)}{(3,1),(4,2),(5,3),(6,4)}.D.The range is  {1,2,3,4}

Set operations can be applied on any two relations with the same number of attributes.Question 3Select one:TrueFalse