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Database Systems 6th Edition by Ramez Elmasri, Shamkant B. Navathe
النسخة 6الرقم المعياري الدولي: 0136086209Database Systems 6th Edition by Ramez Elmasri, Shamkant B. Navathe
النسخة 6الرقم المعياري الدولي: 0136086209 تمرين 3
Consider the relation:
BOOK (Book_Name, Author, Edition, Year)
with the data:
a. Based on a common-sense understanding of the above data, what are the possible candidate keys of this relation?
b. Does the above have one or more functional dependency (do not list FDs by applying derivation rules)? If so, what is it? Show how you will remove it by decomposition.
c. Does the resulting relation have an MVD? If so, what is it?
d. What will the final decomposition look like?
BOOK (Book_Name, Author, Edition, Year)
with the data:
a. Based on a common-sense understanding of the above data, what are the possible candidate keys of this relation?b. Does the above have one or more functional dependency (do not list FDs by applying derivation rules)? If so, what is it? Show how you will remove it by decomposition.
c. Does the resulting relation have an MVD? If so, what is it?
d. What will the final decomposition look like?
التوضيح
موثّق
موثّق
a. The only candidate key is {Book_Name,...
Database Systems 6th Edition by Ramez Elmasri, Shamkant B. Navathe
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