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SELECT * FROM `REFERENTIAL_CONSTRAINTS` ORDER BY `CONSTRAINT_SCHEMA` DESC 
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CONSTRAINT_CATALOG CONSTRAINT_SCHEMA Descending Ascending 1 CONSTRAINT_NAME UNIQUE_CONSTRAINT_CATALOG UNIQUE_CONSTRAINT_SCHEMA UNIQUE_CONSTRAINT_NAME MATCH_OPTION UPDATE_RULE DELETE_RULE TABLE_NAME REFERENCED_TABLE_NAME
def students_app_db announcement_reads_ibfk_1 def students_app_db PRIMARY NONE RESTRICT RESTRICT announcement_reads announcements
def students_app_db notes_files_ibfk_1 def students_app_db PRIMARY NONE RESTRICT RESTRICT notes_files units
def students_app_db announcements_ibfk_1 def students_app_db PRIMARY NONE RESTRICT RESTRICT announcements users
def students_app_db lesson_instances_ibfk_2 def students_app_db PRIMARY NONE RESTRICT RESTRICT lesson_instances users
def students_app_db lesson_instances_ibfk_1 def students_app_db PRIMARY NONE RESTRICT RESTRICT lesson_instances timetable
def students_app_db courses_ibfk_1 def students_app_db PRIMARY NONE RESTRICT RESTRICT courses faculties
def students_app_db timetable_ibfk_1 def students_app_db PRIMARY NONE RESTRICT RESTRICT timetable units
def students_app_db announcement_reads_ibfk_2 def students_app_db PRIMARY NONE RESTRICT RESTRICT announcement_reads users
def students_app_db notes_files_ibfk_2 def students_app_db PRIMARY NONE RESTRICT RESTRICT notes_files users
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