Decompose the table - 3nf or bcnf, Database Management System

Assignment Help:

Decompose the table with the following description and functional dependencies into a set of equivalent tables normalized to 3NF or BCNF.

A long-standing international treaty among the leaders of the world's developed countries prevents any and all evidence of extraterrestrial life that has been discovered from being reported to the people of Earth.  Although each country dedicates many federal agencies to furthering the country's interests, in the case of contact with extraterrestrial life, all relevant agencies of the world have agreed to cooperate.  They have developed a database in which information pertaining to extraterrestrial life encounters is recorded.  Much of the data is the identification information about those involved in an instance of contact.  Multiple humans and multiple aliens (assume these are all of one species in a single encounter) may be involved in a single encounter, and sometimes the same human will be involved in more than one encounter.  Encounters are classified in a standardized manner.  The final outcome(s) of the human participant(s) in the encounter is (are) also recorded.  Students of social psychology around the world whisper that this final outcome is a government-created and enforced disposition of the most sinister sort.

Data:

governmentID: the international identification for a government official who is responsible for information on an encounter
governmentOfficialName: the name of a participating government official       
securityClearanceRating: a government official's international security clearance  
agency: the federal agency for which the government official works                        
country: a government official's country of citizenship                
alienID: the identification for an extraterrestrial life form                                      
alienSpeciesName: the name of an extraterrestrial life form's species             
homePlanet: the planet or solar system + planet from which an extraterrestrial life form comes
communicationAbility: the level at which an extraterrestrial life form can communicate
victimID: the identification assigned to a human who encounters extraterrestrial activity
victimName: the name of the human who encountered extraterrestrial activity
victimDateOfBirth: the birthdate of the human who encountered extraterrestrial activity
victimDisposition: the final outcome of the human after an encounter             
encounter: the identification assigned to any instance of alien-human contact
encounterDate: the date an instance of contact occured
encounterType: the type of alien-human contact which occurred

Functional dependencies:

governmentID→governmentOfficialName, securityClearanceRating, agency, country
alienID→alienSpeciesName, homePlanet, communicationAbility
victimID→victimName, victimDateOfBirth

victimEncounter→victimID, encounter, victimDisposition
alienEncounter→alienID, encounter
encounter→encounterDate, governmentID, encounterType


Related Discussions:- Decompose the table - 3nf or bcnf

Purchase orber , Run the following queries. For each query show 1) What yo...

Run the following queries. For each query show 1) What you expect the output to be based upon the data 2) the SQL code and 3) the output running the query in Oracle. 1. Show all c

How does the system cope up with a record crash, How does the system cope u...

How does the system cope up with a record crash when recovery is going on after the first crash? Ans:  In a system the undo and redo operations are needed to be idempotent to c

A database administrator'', A database administrator''s responsibilities an...

A database administrator''s responsibilities and data contents

What is hierarchical dbms, What is Hierarchical DBMS In HDBMS, data is ...

What is Hierarchical DBMS In HDBMS, data is structured in a tree like manner. There is a parent-child relationship between data items and the data model is very suitable for re

Normalise data to third normal form, A software contract and consultancy fi...

A software contract and consultancy firm maintains details of all the various projects in which its employees are currently involved. These details comprise: Employee Numbe

By which techniquestransaction processing is associated, By which technique...

By which techniquesTransaction processing is associated? Transaction processing is associated by producing detail, summary, or exception reports and recording a business activi

Object-based models - data models, Object-based Models: Use objects as key ...

Object-based Models: Use objects as key data representation components . Examples:-   Entity-Relationship Model: It is a collection of real world objects known as entitie

Back up files, what is the importance of back up files

what is the importance of back up files

DW, #ques Define a job scheduling strategy that will meet business requirem...

#ques Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a p

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd