select
c_c_u.table_name sr_c_table,
c_c_u.constraint_name sr_c_constraint,
c_c_u.column_name sr_c_col,
k_c_u.table_name target_table,
k_c_u.column_name target_col
from INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE c_c_u,
INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS r_......