Can there be two identical values for a foreign key referencing the same table in a database?

Yes, the database can contain multiple identical foreign key values referencing the same record in the parent table. The foreign key is used to ensure referential integrity and points to an existing record in another table, but it does not limit the number of references to that record.

For example, if there is a table Orders with a foreign key customer_id referencing the Customers table, then multiple orders can belong to the same customer, and the customer_id column will have the same value repeated.