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Consider the relation R = {F, T, D, N, S} and the set of functional dependencies K = {F¬D, {D, T} -F, {F, N)→S}. What is the key for R? Select one: O a. {F, T, N} O b. {T, N} O c. {F, T} O d. (F, D}

Consider the relation R = {F, T, D, N, S} and the set of functional dependencies K = {F¬D, {D, T} -F, {F, N)→S}. What is the key for R? Select one: O a. {F, T, N} O b. {T, N} O c. {F, T} O d. (F, D}

Computer Networking: A Top-Down Approach (7th Edition)
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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### Database Functional Dependencies and Key Identification Consider the relation **R** = {**F, T, D, N, S**} and the set of functional dependencies **K** = {**F** → **D**, {**F, N**} → **S**}. **Question: What is the key for R?** #### Options: a. {**F, T, N**} b. {**T, N**} c. {**F, T**} d. {**F, D**} Please select the correct option from the choices provided. Understanding functional dependencies and how they determine the relationships among attributes in the relation can help in identifying the key. The key is the minimal set of attributes that can uniquely identify tuples in a relation.
Transcribed Image Text:### Database Functional Dependencies and Key Identification Consider the relation **R** = {**F, T, D, N, S**} and the set of functional dependencies **K** = {**F** → **D**, {**F, N**} → **S**}. **Question: What is the key for R?** #### Options: a. {**F, T, N**} b. {**T, N**} c. {**F, T**} d. {**F, D**} Please select the correct option from the choices provided. Understanding functional dependencies and how they determine the relationships among attributes in the relation can help in identifying the key. The key is the minimal set of attributes that can uniquely identify tuples in a relation.
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