Choose all of the correct superkeys.) Find all superkeys of the DEPARTMENT relation. Its primary key (PK) is underlined. DEPARTMENT (number, dname, mgrssn, location) PK = {dname, location} {number} {number, dname} {number, dname, mgrssn} {number, dname, mgrssn, location} {dname} {dname, mgrssn} {dname, mgrssn, location} {mgrssn} {mgrssn, location} {location} {number, dname, mgrssn} {number, dname, location} {number, mgrssn} {number, mgrssn, location} {number, location} {dname, location}
Choose all of the correct superkeys.) Find all superkeys of the DEPARTMENT relation. Its primary key (PK) is underlined. DEPARTMENT (number, dname, mgrssn, location) PK = {dname, location} {number} {number, dname} {number, dname, mgrssn} {number, dname, mgrssn, location} {dname} {dname, mgrssn} {dname, mgrssn, location} {mgrssn} {mgrssn, location} {location} {number, dname, mgrssn} {number, dname, location} {number, mgrssn} {number, mgrssn, location} {number, location} {dname, location}
Chapter2: Database Design Fundamentals
Section: Chapter Questions
Problem 5RQ: What is a relation?
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(Choose all of the correct superkeys.) Find all superkeys of the DEPARTMENT relation. Its primary key (PK) is underlined.
DEPARTMENT (number, dname, mgrssn, location)
PK = {dname, location}
- {number}
- {number, dname}
- {number, dname, mgrssn}
- {number, dname, mgrssn, location}
- {dname}
- {dname, mgrssn}
- {dname, mgrssn, location}
- {mgrssn}
- {mgrssn, location}
- {location}
- {number, dname, mgrssn}
- {number, dname, location}
- {number, mgrssn}
- {number, mgrssn, location}
- {number, location}
- {dname, location}
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