Question
Explain the following concepts with respect to the relational data model, giving one data-science-oriented example for each:
Candidate Key
Functional Dependency
Referential Integrity
Selection Operation
Projection Oeration
Answer :
Word Count : 275
____ ________ ______ _______ ________ ________ _____ ______ __________ ___ _______.
____ __________ ________ _________ ______ __________.
____ __________ __________ _____ __________ __________ _____ ___ _________ ________ ___.
________ __________ ______ ______ __________ ____.
________ ____ ____ _________ ________ __________ _______ __________ ______ ______.
_____ ______ _________ _____ ______.
_____ _______ _________ _____ __________ ______ __________ ________ ________.
_____ _________ ________ ________ _____ _____ ______ ________ ____ _________ ___.
______ __________ _________ ___ _________ _____.
_____ ______ ________ ___ ______ _________ ________ ____ ________.
____ ________ __________ ________ _______ ________ ___ _________ __________ _______ ________ ______.
_________ __________ _________ _______ __________ ___ ________.
_______ ________ ___ ________ __________ ___ ____ ____ _______ ___.
__________ _____ __________ _________ _____ _________ _____ _______.
__________ _____ __________ _______ ____ _______ ___ ________.
_______ __________ _________ _______ _______ _________ ______ ______ _______ __________ _________ ___.
______ _______ __________ _______ ___ ________ _________ ___ ________.
_______ ____ ___ ________ _____.
__________ ________ ______ ___ ______ _____ ________ _________ ____ __________ ____.
_________ _______ _____ ________ ________ _______ ________ _________.
__________ _________ _____ ______ ____ ___.
Skip in 10
In the relational data model, a Candidate Key is a minimal set of attributes that uniquely identifies each tuple in a relation. A relation may have multiple candidate keys, but each must ensure uniqueness and contain no redundant attribute. For example, in a data science project involving customer analytics, a table named Customers may contain attributes such as CustomerID, Email, Name, and Phone. Both CustomerID and Email could uniquely identify each customer. If neither attribute contains unnecessary components, each can serve as a candidate key.
___ _____ _____ ___ _______ _____ ___ _________ _____ __________.____ ________ ______ _______ ________ ________ _____ ______ __________ ___ _______.
____ __________ ________ _________ ______ __________.
____ __________ __________ _____ __________ __________ _____ ___ _________ ________ ___.
________ __________ ______ ______ __________ ____.
________ ____ ____ _________ ________ __________ _______ __________ ______ ______.
_____ ______ _________ _____ ______.
_____ _______ _________ _____ __________ ______ __________ ________ ________.
_____ _________ ________ ________ _____ _____ ______ ________ ____ _________ ___.
______ __________ _________ ___ _________ _____.
_____ ______ ________ ___ ______ _________ ________ ____ ________.
____ ________ __________ ________ _______ ________ ___ _________ __________ _______ ________ ______.
_________ __________ _________ _______ __________ ___ ________.
_______ ________ ___ ________ __________ ___ ____ ____ _______ ___.
__________ _____ __________ _________ _____ _________ _____ _______.
__________ _____ __________ _______ ____ _______ ___ ________.
_______ __________ _________ _______ _______ _________ ______ ______ _______ __________ _________ ___.
______ _______ __________ _______ ___ ________ _________ ___ ________.
_______ ____ ___ ________ _____.
__________ ________ ______ ___ ______ _____ ________ _________ ____ __________ ____.
_________ _______ _____ ________ ________ _______ ________ _________.
__________ _________ _____ ______ ____ ___.
IGNOU ACADEMY
Your IGNOU journey, made easier.
- Solved Assignments
- Study Notes
- Guess Papers
- Question Papers
Continue Reading — It's Free
Sign in with Google to unlock more of this answer.
✓ Free access
✓ Unlock up to 60% of the answer
✓ No payment required
✓ Unlock up to 60% of the answer
✓ No payment required
Quick Google sign-in. No separate registration form.