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sqloracle-databaseoracle10gora-00942

Can I create Foreign Keys across Databases?

We have 2 databases - DB1 & DB2.

Can I create a table in DB1 that has a relation with one of the tables in DB2? In other words, can I have a Foreign Key in my table from another database?

I connect to these databases with different users. Any ideas?

Right now, I receive the error:

ORA-00942:Table or view does not exist

Solution

  • No, Oracle does not allow you to create a foreign key constraint that references a table via a database link. You would have to use triggers to enforce the integrity.