Explanation of Solution
Determinant in following relation:
Assumption 1:
PetName → (PetType, PetBreed, PetDOB, OwnerLastName, OwnerFirstName, OwnerPhone, OwnerEmail)
In the above expression, PetName attribute determines PetType, PetBreed, PetDOB, OwnerLastName, OwnerFirstName, OwnerPhone, and OwnerEmail attributes, left term “PetName” refers the determinant, and “→” defines the relationship.
- That is, the PetType, PetBreed, PetDOB, OwnerLastName, OwnerFirstName, OwnerPhone, and OwnerEmail are functionally dependent on PetName.
Therefore, the “PetName” is the determinant for this assumption.
Assumption 2:
OwnerEmail → (OwnerLastName, OwnerFirstName, OwnerPhone)
In the above expression, OwnerEmail attribute determines OwnerLastName, OwnerFirstName, and OwnerPhone attributes, left term “OwnerEmail” refers the determinant, and “→” defines the relationship.
- That is, the OwnerLastName, OwnerFirstName, and OwnerPhone are functionally dependent on OwnerEmail.
Therefore, the “OwnerEmail” is the determinant for this assumption.
Assumption 3:
OwnerPhone → (OwnerLastName, OwnerFirstName, OwnerEmail)
In the above expression, OwnerPhone attribute determines OwnerLastName, OwnerFirstName, and OwnerEmail attributes, “OwnerPhone” refers the determinant, and “→” defines the relationship.
- That is, the OwnerLastName, OwnerFirstName, and OwnerEmail are functionally dependent on OwnerPhone...
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Database Concepts (7th Edition)
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