Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 24 Oct 2017 My Price 5.00

design of a database

Cardinality ratios often dictate the detailed design of a database. The cardinality ratio depends on the real-world meaning of the entity types involved and is defined by the specific application. For the following binary relationships, suggest cardinality ratios based on the common-sense meaning of the entity types. Clearly state any assumptions you make.

Entity                                                                    1 Cardinality Ratio                                            Entity 2

1. STUDENT                                                        ______________                           SOCIAL_SECURITY_CARD

2. STUDENT                                                        ______________                           TEACHER

3. CLASSROOM                                                                 ______________                           WALL

4. COUNTRY                                                       ______________                           CURRENT_PRESIDENT

5. COURSE                                                          ______________                           TEXTBOOK

6. ITEM (that can be found in an order) ______________                           ORDER

7. STUDENT                                                        ______________                           CLASS

8. CLASS                                                               ______________                           INSTRUCTOR

9. INSTRUCTOR                                                                 ______________                           OFFICE

10. EBAY_AUCTION _ITEM                           ______________                           EBAY_BID

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Maurice Tutor
(5)
Status NEW Posted 24 Oct 2017 08:10 PM My Price 5.00

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