1. Consider the following tables. Indicate whether the table is a relational table. Why or why not? If it is not a relational table, correct the table.

table I

A (key)	B	C
2	400	1
44	721	2
51	256	3,4

table I

A (key)	B	C	D
2	101	101	220
4	NULL	102	250
6	400	104	245

table II

E (key)	A (refs table I)
1	2
3	4
5	4
7	NULL