Consider a relation geq which represents greater than or equal to , that is, (x, y) geq only if y x. create table geq (lb integer not null ub integer not null primary key lb foreign key (ub) references geq on delete cascade) Which of the following is possible if a tuple (x, y) is deleted?

The deletion of (x, y) is prohibited

A tupel (z, w) with z > y is deleted

A tuple (z, w) with z > x is deleted

A tuple (z, w) with w < x is deleted

Consider a relation geq which represents greater than or equal to , t

1.	Consider a relation geq which represents greater than or equal to , that is, (x, y) geq only if y x. create table geq (lb integer not null ub integer not null primary key lb foreign key (ub) references geq on delete cascade) Which of the following is possible if a tuple (x, y) is deleted?
A.	A tupel (z, w) with z > y is deleted
B.	A tuple (z, w) with z > x is deleted
C.	A tuple (z, w) with w < x is deleted
D.	The deletion of (x, y) is prohibited
Answer» D. The deletion of (x, y) is prohibited

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Consider a relation geq which represents greater than or equal to , that is, (x, y) geq only if y x. create table geq (lb integer not null ub integer not null primary key lb foreign key (ub) references geq on delete cascade) Which of the following is possible if a tuple (x, y) is deleted?

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Consider a relation geq which represents greater than or equal to , that is, (x, y) geq only if y x.
create table geq
(lb integer not null
ub integer not null
primary key lb foreign key (ub) references geq on delete cascade)
Which of the following is possible if a tuple (x, y) is deleted?