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What is the role of a foreign key? it is a primary key of one table that appears as an attribute in another table and
What is the role of a foreign key?
it is a primary key of one table that appears as an attribute in another table and acts to provide a logical relationship between the two tables
it is a unique way to identify each record
it is a field that uniquely identifies a given record in a table
it supports a secondary key
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The Manga Guide To Databases
Authors: Mana Takahashi, Shoko Azuma, Co Ltd Trend
1st Edition
1593271905, 978-1593271909
