In a table: Worker ( Id number, First, Last, DOB, Email) -Which key is the first name A.Non-unique key B. Candidate key C. Primary key D. Foreign key E. Unique key
In a table: Worker ( Id number, First, Last, DOB, Email) -Which key is the first name A.Non-unique key B. Candidate key C. Primary key D. Foreign key E. Unique key
Database Systems: Design, Implementation, & Management
12th Edition
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter3: The Relational Database Model
Section: Chapter Questions
Problem 10P
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Question
In a table: Worker ( Id number, First, Last, DOB, Email)
-Which key is the first name
A.Non-unique key
B. Candidate key
C. Primary key
D. Foreign key
E. Unique key
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