Which statement is correct concerning Foreign key?

 Posted by vishalneeraj-24503 on 1/2/2015 | Category: Sql Server Interview questions | Views: 1670 | Points: 40
Select from following answers:
  1. Foreign key is a field in the table that is primary key in another table.
  2. Foreign key can accept multiple null value.
  3. Foreign key do not automatically create an index, clustered or non-clustered. We can manually create an index on foreign key.
  4. We can have more than one foreign key in a table.
  5. All Above

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