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Databases for the Web
Web Development Path
Databases for the Web
10 questions
Question 1 of 10
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What is a foreign key in a relational database?
A
An encrypted primary key used for security
B
A column in one table that references the primary key of another table, enforcing referential integrity
C
A key that allows access to the database from an external server
D
An index that speeds up JOIN operations
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