SQL:

1. (1l points) Assume we have two relatioms RUA. B, C) and SA.D,B, as shown below. All the attributes are integer attributes R: 10 10 30 40 30 10 20 30 S: 10 30 50 20 30 15 20 a) (3 points) List all the super keys in relation S? b) (2 points) Show the query result retumed by: IIS.AS.D(S -R). c) (2 points) Show the query result returned by: nRARBSD(?RDSD (Red S). d) (4 points) Assume this symbol represents the natural right outer join operator. Show the query result returned by: R