Which of the following relations is UNION compatible with SAILOR?
A. SAILR(Sailor_ID:smallint, s_name:char(25), DOB:date, Age:int, Address:varchar(5))
B. SAILOR2(S_ID:int, s_name:char(30), DOB:date)
C. SAILOR3(SID:int, s_name:varchar(20), DOB:date, Age:smallint)
D. All of the above
Answer:C
Which of the following relations is UNION compatible with SAILOR?
A. SAILR(Sailor_ID:smallint, s_name:char(25), DOB:date, Age:int, Address:varchar(5)) B. SAILOR2(S_ID:int, s_name:char(30), DOB:date) C. SAILOR3(SID:int, s_name:varchar(20), DOB:date, Age:smallint) D. All of the above