Question: Choose all the correct statement about referential integrity constraints. a. A FOREIGN KEY column in the parent table contains values that exist in the primary

Choose all the correct statement about referential integrity constraints.

a.

A FOREIGN KEY column in the parent table contains values that exist in the primary key column of the child table.
b.

A FOREIGN KEY column in the child table contains values that exist in the primary key column of the parent table.
c.

A FOREIGN KEY column in the child table can have a different name from the primary key column that it references in the parent table.
d.

A FOREIGN KEY column in the child table contains unique values that exist in the primary key column of the parent table.

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