the size of the @fk_cols_array, @fk_names_array, @ref_pk_cols_array and @ref_pk_names_array arrays
the #GdaMetaDbObject which is referenced by the foreign key
the columns' indexes in @meta_table which participate in the constraint (WARNING: columns numbering here start at 1)
the columns' names in @meta_table which participate in the constraint
the #GdaMetaDbObject for which this structure represents a foreign key
the columns' indexes in @depend_on which participate in the constraint (WARNING: columns numbering here start at 1)
the columns' names in @depend_on which participate in the constraint
This structure represents a foreign key constraint, its contents must not be modified.