IT Set 1 — Information Technology STD 10 — Question
CBSE BoardEnglish MediumSTD 10Information TechnologyIT Set 12 Marks
Question
What is the role of a foreign key in a database management system (DBMS)?
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Answer
In a DBMS, a foreign key establishes a relationship between two tables. It references the primary key of another table, enforcing referential integrity. It ensures data consistency by preventing actions that would violate the defined relationships, such as deleting a record referenced by a foreign key constraint.
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