First determine which normal form (1NF, 2NF, 3NF or BCNF) the above relation is, and why. Then, if necessary, convert the above relation to the highest normal form (BCNF). Write any assumptions that you make.

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider a relation named as BOOK that contains data about the books in a library. BOOK relation was initially created with the attributes BookID (an id that library assigns), ISBN, CopyNr (used to differentiate copies of the same book), TitlePublYearAuthor, and AuthorBornYear

Primary key: BookID, CopyNr and Author

Candidate key: ISBN, CopyNr and Author

Below is three dependencies of attributes: 

 

  • Dependency 1 (D1): ISBN, Title, PublYear, AuthorBornYear were dependent on BookIDCopyNr and Author
  • Dependency 2 (D2): Title and PublYear were dependent on BookIDCopyNr
  • Dependency 3 (D3): AuthorBornYear was dependent on Author .  First determine which normal form (1NF, 2NF, 3NF or BCNF) the above relation is, and why.                                                              Then, if necessary, convert the above relation to the highest normal form (BCNF). Write any assumptions that you make.  
BookID ISBN
CopyNr
Title
PublYear |Author
AuthorBornYear
DI
D2
D3
Transcribed Image Text:BookID ISBN CopyNr Title PublYear |Author AuthorBornYear DI D2 D3
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