Question

Which of the following is true about the Referential Integrity?

i) All references must be valid.

ii) It ensures the accuracy and consistency.

iii) Both i) and ii)

iv) None of these​

Answer 1

Answer:

Which of the following statements is true about referential integrity? It checks that no component of a primary key can have a null value and no duplicate entries can exist. It checks that the value of a primary key must beconsistent throughout the life of an instance.

Answer 2

Answer:

All references must be valid.