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Reported Question / Answer
Q.) Referential integrity means
1)
a. Do not enter a value in the foreign key field of a child table if that value does not exist in the primary key of the parent table
2)
b. Do not enter a value in the primary key field of chield table if that value does not exist in the primary key of the parent table
3)
c. Do not enter a value in the foreign key field of a parent table if that value does not exist in the primary key of the child table
4)
d. All of above
5)
NULL
Answer :
1
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