Database Management System

INTRODUCTION


Movie g totallyery is a movie conveyal computer memory located in East Riffa and established in the course of study 1999; it gives their customers the opportunity to rent the latest movies from comedy to action and galore(postnominal) more on DVDs. The calling started off with renting their movies to their subscribers and subsequent on their business expanded to cover changeing the DVDs they rent as well as having a stand to sell brand new ones in the same store to two subscribers and other customers. At present, Movie heading rents as practically as 8000 movies to more than 1300 members. Moreover, they anticipate their business to keep increment in the long run and hope that their future plans for this business like branching out thrives.


























PART
ONE
Diagrams description of relationships and entities







FIRST


SECOND



THIRD: semantic Net



























FORTH: Description of relationships and multiplicity


1.Manages ( faculty and Movies):
This Relationship between the Staff and the Movies entities signifies that the Staff manages the content of DVDs owned y the Movie Gallery .The multiplicity is 1..



1 on the Staff spatial relation and 1..* on the Movies side which means that 1 staff manages one or all the movies .

2.Has ( Movies and MoviesForRent /MoviesSold)
This relationship signifies that the Movies table has / contains twain(prenominal) tables MoviesForRent and MoviesSold. The multiplicity on both sides is 1..* signifying that movies rented and movies sold elicit be at least 1 or can be many but they both belong to the Movies entity.

3.Supply ( Suppliers and Movies)
This relationship between Suppliers and Movies refers to the actual hand over of movies from different providers .The multiplicity on both ends is 1..* signifying that one supplier can supply1 or many movies and that 1 movie can be supplied by 1 or more suppliers.

4.Rented by ( Customers and MoviesForRent )
It refers to the...If you want to get a full essay, order it on our website: Ordercustompaper.com



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