Select from following answers:- FOREIGN KEY constraints can reference only tables within the same database on the same server (unless triggers are used)
- FOREIGN KEY constraints are applied to the preceding column, unless source columns are specified
- FOREIGN KEY constraints are not enforced on temporary tables
- FOREIGN KEY constraints cannot reference another column in the same table
- All Above
We can reference the another columns in the same table for Foreign Key relationships... that is called as Self-Reference
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