Answer / Vikrant

Primary Key is a constraint used to ensure that each record in a table can be uniquely identified. It consists of one or more columns that contain unique values, and it enforces the uniqueness of those values.nnForeign Key is a constraint used to establish a relationship between two tables, where the foreign key in one table references the primary key of another table. It ensures referential integrity by preventing the deletion or modification of primary key values that have associated foreign key values.

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