Which of the following is not true about N:M recursive relationships?

A) Both foreign keys in the intersection table refer to the same table.
B) Since it is a recursive relationship, an intersection table is not needed.
C) The foreign keys in the intersection table can't refer to the same attribute in the parent table.
D) Both B and C are correct.

D

Business

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The variance of a ?2 distribution is twice the value of its mean

Indicate whether the statement is true or false

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Inside businesses, SMM techniques can be used to:

a. explain corporate policies. b. it has no internal use. c. improve engagement with employees.

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