What is the most common method of specifying a primary key in a relational schema description?  Group of choice:   A. by enclosing the key attributes in parentheses B. by stating the key attributes first in the relation definition C. by writing key attributes in all capital letters D. by italicizing the key attributes E. by underlining the attributes that comprise the primary key

Database Systems: Design, Implementation, & Management
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ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter2: Data Models
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What is the most common method of specifying a primary key in a relational schema description?
 Group of choice:
 
A. by enclosing the key attributes in parentheses
B. by stating the key attributes first in the relation definition
C. by writing key attributes in all capital letters
D. by italicizing the key attributes
E. by underlining the attributes that comprise the primary key
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