Hi, Please Follow these Guidelines Carefully.1.  I
Am expecting Great Work from you without any Plagiarism. All Work will
be checked using Safe assign & Turn It in tools for plagiarism.2.
 Previously I Had a Problem with few tutors in this site. They have
provided the same document for me & for another student. We Got 100%
Match in Plagiarism and we both are suspended for a week. So Kindly Do
the fresh work always and even don’t provide the answer by just
modifying it from previously done works.3.  Always Place in text Citations & References in APA Format.4.  Take Care of Vocabulary and Grammar.5.  Finally, Trust Me I will assign Maximum Works to you only in Coming Days.I need atleast 500 words for below questionWhat
are “referential constraint actions”?  Give at least two examples and
explain when the constraint would be triggered.  (Cite your references –
one of which can be your book)Text Book Link:http://jmp.sh/v/sL85a68IiUntHpah6rEs