A foreign key in PostgreSQL is a constraint that creates a relationship between two tables by referencing the primary key of another table. It ensures data integrity by restricting the…
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#foreign keys
Can you explain what a foreign key is in PostgreSQL and how it is used in database design?
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How does SQLite handle foreign key constraints, and why is it important to enforce them in a database schema?
SQLite supports foreign key constraints by allowing you to define relationships between tables. Enforcing these constraints helps maintain referential integrity, ensuring that relationships between tables remain consistent and valid.
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Can you explain the differences between primary and foreign keys in a database and their importance in data integrity?
A primary key uniquely identifies a record in a table, while a foreign key establishes a link between two tables by referencing a primary key in another table. They are…
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