SET AUTOCOMMIT ON;

ALTER TABLE elevation_model DROP CONSTRAINT fk_unit;
ALTER TABLE bed_height_single DROP CONSTRAINT fk_bed_single_river_id;
ALTER TABLE bed_height_single DROP CONSTRAINT fk_type;
ALTER TABLE bed_height_single DROP CONSTRAINT fk_location_system;
ALTER TABLE bed_height_single DROP CONSTRAINT fk_cur_elevation_model;
ALTER TABLE bed_height_single DROP CONSTRAINT fk_old_elevation_model;
ALTER TABLE bed_height_single DROP CONSTRAINT fk_range;
ALTER TABLE bed_height_single_values DROP CONSTRAINT fk_bed_single_values_parent;
ALTER TABLE bed_height_epoch_values DROP CONSTRAINT fk_bed_epoch_values_parent;
ALTER TABLE bed_height_epoch DROP CONSTRAINT fk_epoch_cur_elevation_model;
ALTER TABLE bed_height_epoch DROP CONSTRAINT fk_epoch_old_elevation_model;
ALTER TABLE bed_height_epoch DROP CONSTRAINT fk_epoch_range;
ALTER TABLE depths DROP CONSTRAINT fk_depths_unit_id;
ALTER TABLE sediment_density DROP CONSTRAINT fk_sd_depth_id;
ALTER TABLE sediment_density DROP CONSTRAINT fk_sd_unit_id;
ALTER TABLE sediment_density_values DROP CONSTRAINT fk_sdv_sediment_density_id;

DROP TABLE bed_height_type;
DROP TABLE location_system;
DROP TABLE elevation_model;
DROP TABLE bed_height_single;
DROP TABLE bed_height_single_values;
DROP TABLE bed_height_epoch_values;
DROP TABLE bed_height_epoch;
DROP TABLE depths;
DROP TABLE sediment_density;
DROP TABLE sediment_density_values;

DROP SEQUENCE BED_HEIGHT_TYPE_SEQ;
DROP SEQUENCE LOCATION_SYSTEM_SEQ;
DROP SEQUENCE ELEVATION_MODEL_SEQ;
DROP SEQUENCE BED_HEIGHT_SINGLE_ID_SEQ;
DROP SEQUENCE BED_SINGLE_VALUES_ID_SEQ;
DROP SEQUENCE BED_EPOCH_VALUES_ID_SEQ;
DROP SEQUENCE BED_HEIGHT_EPOCH_ID_SEQ;
DROP SEQUENCE DEPTHS_ID_SEQ;
DROP SEQUENCE SEDIMENT_DENSITY_ID_SEQ;
DROP SEQUENCE SEDIMENT_DENSITY_VALUES_ID_SEQ;