# HG changeset patch
# User mschaefer
# Date 1520930561 -3600
# Node ID 71b17f73176218ca72dff6c36d73bccb1e9edf33
# Parent  a9950a3a71e514e3aa376816eddc207384dacce6
Same data types, precision and scale as in Oracle (as far as possible)

diff -r a9950a3a71e5 -r 71b17f731762 backend/doc/schema/postgresql-minfo.sql
--- a/backend/doc/schema/postgresql-minfo.sql	Wed Mar 07 17:36:04 2018 +0100
+++ b/backend/doc/schema/postgresql-minfo.sql	Tue Mar 13 09:42:41 2018 +0100
@@ -3,7 +3,7 @@
 CREATE SEQUENCE LOCATION_SYSTEM_SEQ;
 
 CREATE TABLE location_system (
-    id          int NOT NULL,
+    id          NUMERIC(9,0) NOT NULL,
     name        VARCHAR(32)  NOT NULL,
     description VARCHAR(255),
     PRIMARY KEY(id)
@@ -13,9 +13,9 @@
 CREATE SEQUENCE ELEVATION_MODEL_SEQ;
 
 CREATE TABLE elevation_model (
-    id          int NOT NULL,
+    id          NUMERIC(9,0) NOT NULL,
     name        VARCHAR(32)  NOT NULL,
-    unit_id     int NOT NULL,
+    unit_id     NUMERIC(9,0) NOT NULL,
     PRIMARY KEY(id),
     CONSTRAINT fk_unit FOREIGN KEY (unit_id) REFERENCES units(id)
 );
@@ -23,7 +23,7 @@
 
 -- lookup table for bedheight types
 CREATE TABLE bed_height_type (
-    id          int NOT NULL,
+    id          NUMERIC(9,0) NOT NULL,
     name        VARCHAR(64) NOT NULL,
     PRIMARY KEY(id)
 );
@@ -38,14 +38,14 @@
 CREATE SEQUENCE BED_HEIGHT_ID_SEQ;
 
 CREATE TABLE bed_height (
-    id                      int NOT NULL,
-    river_id                int NOT NULL,
-    year                    int,
-    type_id                 int NOT NULL,
-    location_system_id      int NOT NULL,
-    cur_elevation_model_id  int NOT NULL,
-    old_elevation_model_id  int,
-    range_id                int,
+    id                      NUMERIC(9,0) NOT NULL,
+    river_id                NUMERIC(9,0) NOT NULL,
+    year                    NUMERIC(9,0),
+    type_id                 NUMERIC(9,0) NOT NULL,
+    location_system_id      NUMERIC(9,0) NOT NULL,
+    cur_elevation_model_id  NUMERIC(9,0) NOT NULL,
+    old_elevation_model_id  NUMERIC(9,0),
+    range_id                NUMERIC(9,0),
     evaluation_by           VARCHAR(255),
     description             VARCHAR(255),
     PRIMARY KEY(id),
@@ -65,14 +65,16 @@
 
 CREATE SEQUENCE BED_HEIGHT_VALUES_ID_SEQ;
 
+--FIXME: make precision and scale of station column equal with the km columns of the other tables
+--FIXME: replace double precision with exact types
 CREATE TABLE bed_height_values (
-    id                      int NOT NULL,
-    bed_height_id    int NOT NULL,
-    station                 NUMERIC NOT NULL,
-    height                  NUMERIC,
-    uncertainty             NUMERIC,
-    data_gap                NUMERIC,
-    sounding_width          NUMERIC,
+    id                      NUMERIC(9,0) NOT NULL,
+    bed_height_id    NUMERIC(9,0) NOT NULL,
+    station                 DOUBLE PRECISION NOT NULL,
+    height                  DOUBLE PRECISION,
+    uncertainty             DOUBLE PRECISION,
+    data_gap                DOUBLE PRECISION,
+    sounding_width          DOUBLE PRECISION,
     PRIMARY KEY(id),
     UNIQUE (station, bed_height_id),
     CONSTRAINT fk_bed_values_parent FOREIGN KEY (bed_height_id)
@@ -83,9 +85,9 @@
 CREATE SEQUENCE DEPTHS_ID_SEQ;
 
 CREATE TABLE depths (
-    id      int NOT NULL,
-    lower   NUMERIC NOT NULL,
-    upper   NUMERIC NOT NULL,
+    id      NUMERIC(9,0) NOT NULL,
+    lower   NUMERIC(6,2) NOT NULL,
+    upper   NUMERIC(6,2) NOT NULL,
     PRIMARY KEY(id)
 );
 
@@ -93,9 +95,9 @@
 CREATE SEQUENCE SEDIMENT_DENSITY_ID_SEQ;
 
 CREATE TABLE sediment_density (
-    id          int NOT NULL,
-    river_id    int NOT NULL,
-    depth_id    int NOT NULL,
+    id          NUMERIC(9,0) NOT NULL,
+    river_id    NUMERIC(9,0) NOT NULL,
+    depth_id    NUMERIC(9,0) NOT NULL,
     description VARCHAR(256),
     PRIMARY KEY(id),
     CONSTRAINT fk_sd_river_id FOREIGN KEY (river_id) REFERENCES rivers(id) ON DELETE CASCADE,
@@ -105,14 +107,15 @@
 
 CREATE SEQUENCE SEDIMENT_DENSITY_VALUES_ID_SEQ;
 
+--FIXME: make precision and scale of station column equal with the km columns of the other tables
 CREATE TABLE sediment_density_values (
-    id                  int NOT NULL,
-    sediment_density_id int NOT NULL,
-    station             NUMERIC NOT NULL,
-    shore_offset	NUMERIC,
-    density             NUMERIC NOT NULL,
+    id                  NUMERIC(9,0) NOT NULL,
+    sediment_density_id NUMERIC(9,0) NOT NULL,
+    station             NUMERIC(6,2) NOT NULL,
+    shore_offset        NUMERIC(6,2),
+    density             NUMERIC(8,2) NOT NULL,
     description         VARCHAR(256),
-    year                int,
+    year                NUMERIC(4,0),
     PRIMARY KEY(id),
     CONSTRAINT fk_sdv_sediment_density_id FOREIGN KEY(sediment_density_id) REFERENCES sediment_density(id) ON DELETE CASCADE
 );
@@ -121,11 +124,11 @@
 CREATE SEQUENCE POROSITY_ID_SEQ;
 
 CREATE TABLE porosity (
-    id               int NOT NULL,
-    river_id         int NOT NULL,
-    depth_id         int NOT NULL,
+    id               NUMERIC(9,0) NOT NULL,
+    river_id         NUMERIC(9,0) NOT NULL,
+    depth_id         NUMERIC(9,0) NOT NULL,
     description      VARCHAR(256),
-    time_interval_id int NOT NULL,
+    time_interval_id NUMERIC(9,0) NOT NULL,
     PRIMARY KEY(id),
     CONSTRAINT fk_p_river_id FOREIGN KEY (river_id) REFERENCES rivers(id) ON DELETE CASCADE,
     CONSTRAINT fk_p_depth_id FOREIGN KEY (depth_id) REFERENCES depths(id),
@@ -135,12 +138,13 @@
 
 CREATE SEQUENCE POROSITY_VALUES_ID_SEQ;
 
+--FIXME: make precision and scale of station column equal with the km columns of the other tables
 CREATE TABLE porosity_values (
-    id                  int NOT NULL,
-    porosity_id         int NOT NULL,
-    station             NUMERIC NOT NULL,
-    shore_offset        NUMERIC,
-    porosity            NUMERIC NOT NULL,
+    id                  NUMERIC(9,0) NOT NULL,
+    porosity_id         NUMERIC(9,0) NOT NULL,
+    station             DOUBLE PRECISION NOT NULL,
+    shore_offset        DOUBLE PRECISION,
+    porosity            DOUBLE PRECISION NOT NULL,
     description         VARCHAR(256),
     PRIMARY KEY(id),
     CONSTRAINT fk_pv_porosity_id FOREIGN KEY(porosity_id) REFERENCES porosity(id) ON DELETE CASCADE
@@ -150,9 +154,9 @@
 CREATE SEQUENCE MORPHOLOGIC_WIDTH_ID_SEQ;
 
 CREATE TABLE morphologic_width (
-    id          int NOT NULL,
-    river_id    int NOT NULL,
-    unit_id     int NOT NULL,
+    id          NUMERIC(9,0) NOT NULL,
+    river_id    NUMERIC(9,0) NOT NULL,
+    unit_id     NUMERIC(9,0) NOT NULL,
     PRIMARY KEY(id),
     CONSTRAINT fk_mw_river_id FOREIGN KEY(river_id) REFERENCES rivers(id) ON DELETE CASCADE,
     CONSTRAINT fk_mw_unit_id FOREIGN KEY(unit_id) REFERENCES units(id)
@@ -162,10 +166,10 @@
 CREATE SEQUENCE MORPH_WIDTH_VALUES_ID_SEQ;
 
 CREATE TABLE morphologic_width_values (
-    id                      int NOT NULL,
-    morphologic_width_id    int NOT NULL,
-    station                 NUMERIC NOT NULL,
-    width                   NUMERIC NOT NULL,
+    id                      NUMERIC(9,0) NOT NULL,
+    morphologic_width_id    NUMERIC(9,0) NOT NULL,
+    station                 NUMERIC(7,3) NOT NULL,
+    width                   NUMERIC(7,3) NOT NULL,
     description             VARCHAR(256),
     PRIMARY KEY(id),
     CONSTRAINT fk_mwv_morphologic_width_id FOREIGN KEY (morphologic_width_id) REFERENCES morphologic_width(id) ON DELETE CASCADE
@@ -175,10 +179,10 @@
 CREATE SEQUENCE DISCHARGE_ZONE_ID_SEQ;
 
 CREATE TABLE discharge_zone (
-    id                      int NOT NULL,
-    river_id                int NOT NULL,
+    id                      NUMERIC(9,0) NOT NULL,
+    river_id                NUMERIC(9,0) NOT NULL,
     gauge_name              VARCHAR(64)  NOT NULL, -- this is not very proper, but there are gauges with no db instance
-    value                   NUMERIC NOT NULL,
+    value                   NUMERIC(8,3) NOT NULL,
     lower_discharge         VARCHAR(64)  NOT NULL,
     upper_discharge         VARCHAR(64),
     PRIMARY KEY(id),
@@ -189,8 +193,8 @@
 CREATE SEQUENCE FLOW_VELOCITY_MODEL_ID_SEQ;
 
 CREATE TABLE flow_velocity_model (
-    id                  int NOT NULL,
-    discharge_zone_id   int NOT NULL,
+    id                  NUMERIC(9,0) NOT NULL,
+    discharge_zone_id   NUMERIC(9,0) NOT NULL,
     description         VARCHAR(256),
     PRIMARY KEY (id),
     CONSTRAINT fk_fvm_discharge_zone_id FOREIGN KEY (discharge_zone_id) REFERENCES discharge_zone (id) ON DELETE CASCADE
@@ -200,13 +204,13 @@
 CREATE SEQUENCE FLOW_VELOCITY_M_VALUES_ID_SEQ;
 
 CREATE TABLE flow_velocity_model_values (
-    id                      int NOT NULL,
-    flow_velocity_model_id  int NOT NULL,
-    station                 NUMERIC NOT NULL,
-    q                       NUMERIC NOT NULL,
-    total_channel           NUMERIC NOT NULL,
-    main_channel            NUMERIC NOT NULL,
-    shear_stress            NUMERIC NOT NULL,
+    id                      NUMERIC(9,0) NOT NULL,
+    flow_velocity_model_id  NUMERIC(9,0) NOT NULL,
+    station                 NUMERIC(7,3) NOT NULL,
+    q                       NUMERIC(8,3) NOT NULL,
+    total_channel           NUMERIC(5,3) NOT NULL,
+    main_channel            NUMERIC(5,3) NOT NULL,
+    shear_stress            NUMERIC(6,3) NOT NULL,
     PRIMARY KEY(id),
     UNIQUE (station, flow_velocity_model_id),
     CONSTRAINT fk_fvv_flow_velocity_model_id FOREIGN KEY (flow_velocity_model_id) REFERENCES flow_velocity_model(id) ON DELETE CASCADE
@@ -217,8 +221,8 @@
 CREATE SEQUENCE FV_MEASURE_ID_SEQ;
 
 CREATE TABLE flow_velocity_measurements (
-    id          int NOT NULL,
-    river_id    int NOT NULL,
+    id          NUMERIC(9,0) NOT NULL,
+    river_id    NUMERIC(9,0) NOT NULL,
     description VARCHAR(256),
     PRIMARY KEY (id),
     CONSTRAINT fk_fvm_rivers_id FOREIGN KEY (river_id) REFERENCES rivers(id) ON DELETE CASCADE
@@ -227,13 +231,13 @@
 CREATE SEQUENCE FV_MEASURE_VALUES_ID_SEQ;
 
 CREATE TABLE flow_velocity_measure_values (
-    id              int NOT NULL,
-    measurements_id int NOT NULL,
-    station         NUMERIC NOT NULL,
-    datetime        TIMESTAMP,
-    w               NUMERIC NOT NULL,
-    q               NUMERIC NOT NULL,
-    v               NUMERIC NOT NULL,
+    id              NUMERIC(9,0) NOT NULL,
+    measurements_id NUMERIC(9,0) NOT NULL,
+    station         NUMERIC(7,3) NOT NULL,
+    datetime        TIMESTAMP(0),
+    w               NUMERIC(7,3) NOT NULL,
+    q               NUMERIC(8,3) NOT NULL,
+    v               NUMERIC(5,3) NOT NULL,
     description     VARCHAR(256),
     PRIMARY KEY (id),
     CONSTRAINT fk_fvmv_measurements_id FOREIGN KEY (measurements_id) REFERENCES flow_velocity_measurements (id) ON DELETE CASCADE
@@ -243,10 +247,10 @@
 CREATE SEQUENCE GRAIN_FRACTION_ID_SEQ;
 
 CREATE TABLE grain_fraction (
-    id      int   NOT NULL,
+    id      NUMERIC(9,0)   NOT NULL,
     name    VARCHAR(64)    NOT NULL,
-    lower   NUMERIC,
-    upper   NUMERIC,
+    lower   NUMERIC(6,3),
+    upper   NUMERIC(6,3),
     PRIMARY KEY (id),
     UNIQUE(name, lower, upper)
 );
@@ -265,7 +269,7 @@
 
 --lookup table for sediment load kinds
 CREATE TABLE sediment_load_kinds (
-    id 	     int PRIMARY KEY NOT NULL,
+    id 	     NUMERIC(9,0) PRIMARY KEY NOT NULL,
     kind     VARCHAR(64) NOT NULL
 );
 INSERT INTO sediment_load_kinds (id, kind) VALUES (0, 'non-official');
@@ -274,14 +278,14 @@
 CREATE SEQUENCE SEDIMENT_LOAD_LS_ID_SEQ;
 
 CREATE TABLE sediment_load_ls (
-    id                  int NOT NULL,
-    river_id            int NOT NULL,
-    grain_fraction_id   int,
-    unit_id             int NOT NULL,
-    time_interval_id    int NOT NULL,
-    sq_time_interval_id int,
+    id                  NUMERIC(9,0) NOT NULL,
+    river_id            NUMERIC(9,0) NOT NULL,
+    grain_fraction_id   NUMERIC(9,0),
+    unit_id             NUMERIC(9,0) NOT NULL,
+    time_interval_id    NUMERIC(9,0) NOT NULL,
+    sq_time_interval_id NUMERIC(9,0),
     description         VARCHAR(256),
-    kind                int,
+    kind                NUMERIC(9,0),
     PRIMARY KEY (id),
     CONSTRAINT fk_slls_river_id FOREIGN KEY (river_id)
         REFERENCES rivers(id) ON DELETE CASCADE,
@@ -301,10 +305,10 @@
 CREATE SEQUENCE SEDIMENT_LOAD_LS_VALUES_ID_SEQ;
 
 CREATE TABLE sediment_load_ls_values (
-    id                  int NOT NULL,
-    sediment_load_ls_id   int NOT NULL,
-    station             NUMERIC NOT NULL,
-    value               NUMERIC NOT NULL,
+    id                  NUMERIC(9,0) NOT NULL,
+    sediment_load_ls_id   NUMERIC(9,0) NOT NULL,
+    station             NUMERIC(7,3) NOT NULL,
+    value               NUMERIC(10,3) NOT NULL,
     PRIMARY KEY (id),
     CONSTRAINT fk_sllsv_sediment_load_ls_id FOREIGN KEY (sediment_load_ls_id)
         REFERENCES sediment_load_ls(id) ON DELETE CASCADE
@@ -313,10 +317,10 @@
 
 CREATE SEQUENCE MEASUREMENT_STATION_ID_SEQ;
 CREATE TABLE measurement_station (
-    id                       int          NOT NULL,
-    range_id                 int          NOT NULL,
-    reference_gauge_id       int,
-    time_interval_id         int,
+    id                       NUMERIC(9,0)          NOT NULL,
+    range_id                 NUMERIC(9,0)          NOT NULL,
+    reference_gauge_id       NUMERIC(9,0),
+    time_interval_id         NUMERIC(9,0),
     name                     VARCHAR(256) NOT NULL,
     measurement_type         VARCHAR(64)  NOT NULL,
     riverside                VARCHAR(16),
@@ -338,12 +342,12 @@
 CREATE SEQUENCE SEDIMENT_LOAD_ID_SEQ;
 
 CREATE TABLE sediment_load (
-    id                    int NOT NULL,
-    grain_fraction_id     int NOT NULL,
-    time_interval_id      int NOT NULL,
-    sq_time_interval_id   int,
+    id                    NUMERIC(9,0) NOT NULL,
+    grain_fraction_id     NUMERIC(9,0) NOT NULL,
+    time_interval_id      NUMERIC(9,0) NOT NULL,
+    sq_time_interval_id   NUMERIC(9,0),
     description           VARCHAR(256),
-    kind                  int,
+    kind                  NUMERIC(9,0),
     PRIMARY KEY (id),
     CONSTRAINT fk_sl_kind_id FOREIGN KEY (kind)
         REFERENCES sediment_load_kinds(id),
@@ -359,9 +363,9 @@
 CREATE SEQUENCE SEDIMENT_LOAD_VALUES_ID_SEQ;
 
 CREATE TABLE sediment_load_values (
-    id                      int NOT NULL,
-    sediment_load_id        int NOT NULL,
-    measurement_station_id  int NOT NULL,
+    id                      NUMERIC(9,0) NOT NULL,
+    sediment_load_id        NUMERIC(9,0) NOT NULL,
+    measurement_station_id  NUMERIC(9,0) NOT NULL,
     value                   DOUBLE PRECISION NOT NULL,
     PRIMARY KEY (id),
     CONSTRAINT fk_slv_sediment_load_id FOREIGN KEY (sediment_load_id)
@@ -374,8 +378,8 @@
 CREATE SEQUENCE SQ_RELATION_ID_SEQ;
 
 CREATE TABLE sq_relation (
-    id               int NOT NULL,
-    time_interval_id int NOT NULL,
+    id               NUMERIC(9,0) NOT NULL,
+    time_interval_id NUMERIC(9,0) NOT NULL,
     description      VARCHAR(256),
     PRIMARY KEY (id),
     CONSTRAINT fk_sqr_tinterval_id FOREIGN KEY (time_interval_id)
@@ -385,19 +389,20 @@
 
 CREATE SEQUENCE SQ_RELATION_VALUES_ID_SEQ;
 
+--FIXME: adjust precision and scale of the numerics
 CREATE TABLE sq_relation_value (
-    id                     int NOT NULL,
-    sq_relation_id         int NOT NULL,
-    measurement_station_id int NOT NULL,
+    id                     NUMERIC(9,0) NOT NULL,
+    sq_relation_id         NUMERIC(9,0) NOT NULL,
+    measurement_station_id NUMERIC(9,0) NOT NULL,
     parameter              VARCHAR(1) NOT NULL,
-    a                      NUMERIC NOT NULL,
-    b                      NUMERIC NOT NULL,
-    qmax                   NUMERIC NOT NULL,
-    rsq                    NUMERIC,
-    ntot                   int,
-    noutl                  int,
-    cferguson              NUMERIC,
-    cduan                  NUMERIC,
+    a                      NUMERIC(38,20) NOT NULL,
+    b                      NUMERIC(38,20) NOT NULL,
+    qmax                   NUMERIC(38,20) NOT NULL,
+    rsq                    NUMERIC(38,3),
+    ntot                   NUMERIC(9,0),
+    noutl                  NUMERIC(9,0),
+    cferguson              NUMERIC(38,20),
+    cduan                  NUMERIC(38,20),
     PRIMARY KEY (id),
     UNIQUE(sq_relation_id, measurement_station_id, parameter),
     CONSTRAINT fk_sqr_id FOREIGN KEY (sq_relation_id)
diff -r a9950a3a71e5 -r 71b17f731762 backend/doc/schema/postgresql-spatial.sql
--- a/backend/doc/schema/postgresql-spatial.sql	Wed Mar 07 17:36:04 2018 +0100
+++ b/backend/doc/schema/postgresql-spatial.sql	Tue Mar 13 09:42:41 2018 +0100
@@ -1,7 +1,10 @@
 BEGIN;
 
+--FIXME: Adjust precision and scale to reasonable numbers
+--FIXME: Make precision and scale equal for all km columns in the database
+
 CREATE TABLE axis_kinds(
-    id int PRIMARY KEY NOT NULL,
+    id NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name VARCHAR(64)
 );
 INSERT INTO axis_kinds(id, name) VALUES (0, 'Unbekannt');
@@ -11,9 +14,9 @@
 -- Geodaesie/Flussachse+km/achse
 CREATE SEQUENCE RIVER_AXES_ID_SEQ;
 CREATE TABLE river_axes (
-    id       int PRIMARY KEY NOT NULL,
-    river_id int REFERENCES rivers(id) ON DELETE CASCADE,
-    kind_id  int REFERENCES axis_kinds(id) NOT NULL DEFAULT 0,
+    id       NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
+    kind_id  NUMERIC(9,0) REFERENCES axis_kinds(id) NOT NULL DEFAULT 0,
     name     VARCHAR(64),
     path     VARCHAR(256)
 );
@@ -25,10 +28,10 @@
 -- Geodaesie/Flussachse+km/km.shp
 CREATE SEQUENCE RIVER_AXES_KM_ID_SEQ;
 CREATE TABLE river_axes_km (
-    id       int PRIMARY KEY NOT NULL,
-    river_id int REFERENCES rivers(id) ON DELETE CASCADE,
-    km       FLOAT8 NOT NULL,
-    fedstate_km FLOAT8,
+    id       NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
+    km       NUMERIC(7,3) NOT NULL,
+    fedstate_km NUMERIC(7,3),
     name     VARCHAR(64),
     path     VARCHAR(256)
 );
@@ -38,7 +41,7 @@
 
 --Geodaesie/Querprofile/QP-Spuren/qps.shp
 CREATE TABLE cross_section_track_kinds(
-    id int PRIMARY KEY NOT NULL,
+    id NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name VARCHAR(64)
 );
 INSERT INTO cross_section_track_kinds(id, name) VALUES (0, 'Sonstige');
@@ -46,11 +49,11 @@
 
 CREATE SEQUENCE CROSS_SECTION_TRACKS_ID_SEQ;
 CREATE TABLE cross_section_tracks (
-    id       int PRIMARY KEY NOT NULL,
-    river_id int REFERENCES rivers(id) ON DELETE CASCADE,
-    kind_id  int REFERENCES cross_section_track_kinds(id) NOT NULL DEFAULT 0,
-    km       FLOAT8 NOT NULL,
-    z        FLOAT8 NOT NULL DEFAULT 0,
+    id       NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
+    kind_id  NUMERIC(9,0) REFERENCES cross_section_track_kinds(id) NOT NULL DEFAULT 0,
+    km       NUMERIC(16,12) NOT NULL,
+    z        NUMERIC(16,12) NOT NULL DEFAULT 0,
     name     VARCHAR(64),
     path     VARCHAR(256)
 );
@@ -58,7 +61,7 @@
 ALTER TABLE cross_section_tracks ALTER COLUMN id SET DEFAULT NEXTVAL('CROSS_SECTION_TRACKS_ID_SEQ');
 
 CREATE TABLE building_kinds(
-    id int PRIMARY KEY NOT NULL,
+    id NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name VARCHAR(64)
 );
 INSERT INTO building_kinds(id, name) VALUES (0, 'Sonstige');
@@ -69,12 +72,12 @@
 -- Geodaesie/Bauwerke
 CREATE SEQUENCE BUILDINGS_ID_SEQ;
 CREATE TABLE buildings (
-    id       int PRIMARY KEY NOT NULL,
-    river_id int REFERENCES rivers(id) ON DELETE CASCADE,
+    id       NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
     description VARCHAR(256), -- Name taken from attributes,
     name     VARCHAR(256), -- The layername
-    km       FLOAT8,
-    kind_id  int REFERENCES building_kinds(id) NOT NULL DEFAULT 0,
+    km       NUMERIC(15,11),
+    kind_id  NUMERIC(9,0) REFERENCES building_kinds(id) NOT NULL DEFAULT 0,
     path     VARCHAR(256)
 );
 SELECT AddGeometryColumn('buildings', 'geom', 31467, 'LINESTRING', 2);
@@ -84,11 +87,11 @@
 -- Geodaesie/Festpunkte/Festpunkte.shp
 CREATE SEQUENCE FIXPOINTS_ID_SEQ;
 CREATE TABLE fixpoints (
-    id       int PRIMARY KEY NOT NULL,
-    river_id int REFERENCES rivers(id) ON DELETE CASCADE,
-    x        FLOAT8,
-    y        FLOAT8,
-    km       FLOAT8 NOT NULL,
+    id       NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
+    x        NUMERIC(15,11),
+    y        NUMERIC(15,11),
+    km       NUMERIC(15,11) NOT NULL,
     HPGP     VARCHAR(64),
     name     VARCHAR(64),
     path     VARCHAR(256)
@@ -99,7 +102,7 @@
 
 -- Hydrologie/Hydr. Grenzen/talaue.shp
 CREATE TABLE floodplain_kinds(
-    id int PRIMARY KEY NOT NULL,
+    id NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name VARCHAR(64)
 );
 INSERT INTO floodplain_kinds(id, name) VALUES (0, 'Sonstige');
@@ -107,9 +110,9 @@
 
 CREATE SEQUENCE FLOODPLAIN_ID_SEQ;
 CREATE TABLE floodplain (
-    id       int PRIMARY KEY NOT NULL,
-    river_id int REFERENCES rivers(id) ON DELETE CASCADE,
-    kind_id  int REFERENCES floodplain_kinds(id) NOT NULL DEFAULT 0,
+    id       NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
+    kind_id  NUMERIC(9,0) REFERENCES floodplain_kinds(id) NOT NULL DEFAULT 0,
     name     VARCHAR(64),
     path     VARCHAR(256)
 );
@@ -120,16 +123,16 @@
 -- Geodaesie/Hoehenmodelle/*
 CREATE SEQUENCE DEM_ID_SEQ;
 CREATE TABLE dem (
-    id       int PRIMARY KEY NOT NULL,
-    river_id int REFERENCES rivers(id) ON DELETE CASCADE,
+    id       NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
     name             VARCHAR(64),
-    range_id         INT REFERENCES ranges(id) ON DELETE CASCADE,
-    time_interval_id INT REFERENCES time_intervals(id),
+    range_id         NUMERIC(9,0) REFERENCES ranges(id) ON DELETE CASCADE,
+    time_interval_id NUMERIC(9,0) REFERENCES time_intervals(id),
     projection       VARCHAR(32),
-    srid	     int NOT NULL,
+    srid             NUMERIC(9,0) NOT NULL,
     elevation_state  VARCHAR(32),
     format           VARCHAR(32),
-    border_break     BOOLEAN NOT NULL DEFAULT FALSE,
+    border_break     NUMERIC(1,0) NOT NULL DEFAULT 0,
     resolution       VARCHAR(16),
     description      VARCHAR(256),
     path             VARCHAR(256) NOT NULL
@@ -139,7 +142,7 @@
 
 -- Static lookup tables for Hochwasserschutzanlagen
 CREATE TABLE hws_kinds (
-    id int PRIMARY KEY NOT NULL,
+    id NUMERIC(9,0) PRIMARY KEY NOT NULL,
     kind VARCHAR(64) NOT NULL
 );
 INSERT INTO hws_kinds (id, kind) VALUES (1, 'Durchlass');
@@ -147,7 +150,7 @@
 INSERT INTO hws_kinds (id, kind) VALUES (3, 'Graben');
 
 CREATE TABLE fed_states (
-    id int PRIMARY KEY NOT NULL,
+    id NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name VARCHAR(23) NOT NULL
 );
 INSERT INTO fed_states (id, name) VALUES (1, 'Bayern');
@@ -170,19 +173,19 @@
 --Hydrologie/HW-Schutzanlagen/*Linien.shp
 CREATE SEQUENCE HWS_LINES_ID_SEQ;
 CREATE TABLE hws_lines (
-    id int PRIMARY KEY NOT NULL,
-    ogr_fid int,
-    kind_id int REFERENCES hws_kinds(id) DEFAULT 2,
-    fed_state_id int REFERENCES fed_states(id),
-    river_id int REFERENCES rivers(id) ON DELETE CASCADE,
+    id NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    ogr_fid NUMERIC(9,0),
+    kind_id NUMERIC(9,0) REFERENCES hws_kinds(id) DEFAULT 2,
+    fed_state_id NUMERIC(9,0) REFERENCES fed_states(id),
+    river_id NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
     name VARCHAR(256),
     path VARCHAR(256),
-    official INT DEFAULT 0,
+    official NUMERIC(9,0) DEFAULT 0,
     agency VARCHAR(256),
     range VARCHAR(256),
-    shore_side INT DEFAULT 0,
+    shore_side NUMERIC(9,0) DEFAULT 0,
     source VARCHAR(256),
-    status_date TIMESTAMP,
+    status_date TIMESTAMP(0),
     description VARCHAR(256)
 );
 SELECT AddGeometryColumn('hws_lines', 'geom', 31467, 'MULTILINESTRING', 3);
@@ -193,25 +196,25 @@
 --Hydrologie/HW-Schutzanlagen/*Punkte.shp
 CREATE SEQUENCE HWS_POINTS_ID_SEQ;
 CREATE TABLE hws_points (
-    id int PRIMARY KEY NOT NULL,
-    ogr_fid int,
-    kind_id int REFERENCES hws_kinds(id) DEFAULT 2,
-    fed_state_id int REFERENCES fed_states(id),
-    river_id int REFERENCES rivers(id) ON DELETE CASCADE,
+    id NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    ogr_fid NUMERIC(9,0),
+    kind_id NUMERIC(9,0) REFERENCES hws_kinds(id) DEFAULT 2,
+    fed_state_id NUMERIC(9,0) REFERENCES fed_states(id),
+    river_id NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
     name VARCHAR,
     path VARCHAR,
-    official INT DEFAULT 0,
+    official NUMERIC(9,0) DEFAULT 0,
     agency VARCHAR,
     range VARCHAR,
-    shore_side INT DEFAULT 0,
+    shore_side NUMERIC(9,0) DEFAULT 0,
     source VARCHAR,
     status_date VARCHAR,
     description VARCHAR,
-    freeboard FLOAT8,
-    dike_km FLOAT8,
-    z FLOAT8,
-    z_target FLOAT8,
-    rated_level FLOAT8
+    freeboard NUMERIC(19,5),
+    dike_km NUMERIC(19,5),
+    z NUMERIC(19,5),
+    z_target NUMERIC(19,5),
+    rated_level NUMERIC(19,5)
 );
 SELECT AddGeometryColumn('hws_points', 'geom', 31467, 'POINT', 2);
 
@@ -220,7 +223,7 @@
 --
 --Hydrologie/UeSG
 CREATE TABLE floodmap_kinds (
-    id 	     int PRIMARY KEY NOT NULL,
+    id 	     NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name     varchar(64) NOT NULL
 );
 INSERT INTO floodmap_kinds VALUES (200, 'Messung');
@@ -231,14 +234,14 @@
 
 CREATE SEQUENCE FLOODMAPS_ID_SEQ;
 CREATE TABLE floodmaps (
-    id         int PRIMARY KEY NOT NULL,
-    river_id   int REFERENCES rivers(id) ON DELETE CASCADE,
+    id         NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id   NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
     name       varchar(64) NOT NULL,
-    kind       int NOT NULL REFERENCES floodmap_kinds(id),
-    diff       FLOAT8,
-    count      int,
-    area       FLOAT8,
-    perimeter  FLOAT8,
+    kind       NUMERIC(9,0) NOT NULL REFERENCES floodmap_kinds(id),
+    diff       NUMERIC(19,5),
+    count      NUMERIC(9,0),
+    area       NUMERIC(19,5),
+    perimeter  NUMERIC(19,5),
     waterbody  varchar(64),
     path     VARCHAR(256),
     source   varchar(64)
@@ -247,7 +250,7 @@
 ALTER TABLE floodmaps ALTER COLUMN id SET DEFAULT NEXTVAL('FLOODMAPS_ID_SEQ');
 
 CREATE TABLE sectie_kinds (
-    id int PRIMARY KEY NOT NULL,
+    id NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name VARCHAR(64) NOT NULL
 );
 INSERT INTO sectie_kinds (id, name) VALUES (0, 'nicht berücksichtigt');
@@ -256,7 +259,7 @@
 INSERT INTO sectie_kinds (id, name) VALUES (3, 'Vorland');
 
 CREATE TABLE sobek_kinds (
-    id int PRIMARY KEY NOT NULL,
+    id NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name VARCHAR(64) NOT NULL
 );
 INSERT INTO sobek_kinds (id, name) VALUES (0, 'nicht berücksichtigt');
@@ -264,7 +267,7 @@
 INSERT INTO sobek_kinds (id, name) VALUES (2, 'nicht durchströmt');
 
 CREATE TABLE boundary_kinds (
-    id int PRIMARY KEY NOT NULL,
+    id NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name VARCHAR(64) NOT NULL
 );
 INSERT INTO boundary_kinds (id, name) VALUES (0, 'Unbekannt');
@@ -274,12 +277,12 @@
 
 CREATE SEQUENCE HYDR_BOUNDARIES_ID_SEQ;
 CREATE TABLE hydr_boundaries (
-    id         int PRIMARY KEY NOT NULL,
-    river_id   int REFERENCES rivers(id) ON DELETE CASCADE,
+    id         NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id   NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
     name       VARCHAR(255),
-    kind       int REFERENCES boundary_kinds(id) NOT NULL DEFAULT 0,
-    sectie     int REFERENCES sectie_kinds(id),
-    sobek      int REFERENCES sobek_kinds(id),
+    kind       NUMERIC(9,0) REFERENCES boundary_kinds(id) NOT NULL DEFAULT 0,
+    sectie     NUMERIC(9,0) REFERENCES sectie_kinds(id),
+    sobek      NUMERIC(9,0) REFERENCES sobek_kinds(id),
     path       VARCHAR(256)
 );
 SELECT AddGeometryColumn('hydr_boundaries','geom',31467,'MULTILINESTRING',3);
@@ -288,12 +291,12 @@
 
 CREATE SEQUENCE HYDR_BOUNDARIES_POLY_ID_SEQ;
 CREATE TABLE hydr_boundaries_poly (
-    id         int PRIMARY KEY NOT NULL,
-    river_id   int REFERENCES rivers(id) ON DELETE CASCADE,
+    id         NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id   NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
     name       VARCHAR(255),
-    kind       int REFERENCES boundary_kinds(id) NOT NULL DEFAULT 0,
-    sectie     int REFERENCES sectie_kinds(id),
-    sobek      int REFERENCES sobek_kinds(id),
+    kind       NUMERIC(9,0) REFERENCES boundary_kinds(id) NOT NULL DEFAULT 0,
+    sectie     NUMERIC(9,0) REFERENCES sectie_kinds(id),
+    sobek      NUMERIC(9,0) REFERENCES sobek_kinds(id),
     path       VARCHAR(256)
 );
 SELECT AddGeometryColumn('hydr_boundaries_poly','geom',31467,'MULTIPOLYGON',3);
@@ -301,7 +304,7 @@
 
 
 CREATE TABLE jetty_kinds(
-    id int PRIMARY KEY NOT NULL,
+    id NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name VARCHAR(64)
 );
 INSERT INTO jetty_kinds VALUES (0, 'Buhnenkopf');
@@ -310,10 +313,10 @@
 
 CREATE SEQUENCE JETTIES_ID_SEQ;
 CREATE TABLE jetties (
-    id         int PRIMARY KEY NOT NULL,
-    river_id   int REFERENCES rivers(id) ON DELETE CASCADE,
+    id         NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id   NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
     path       VARCHAR(256),
-    kind_id    int REFERENCES jetty_kinds(id),
+    kind_id    NUMERIC(9,0) REFERENCES jetty_kinds(id),
     km         FLOAT8,
     z	       FLOAT8
 );
@@ -322,13 +325,13 @@
 
 CREATE SEQUENCE FLOOD_MARKS_ID_SEQ;
 CREATE TABLE flood_marks (
-    id         int PRIMARY KEY NOT NULL,
-    river_id   int REFERENCES rivers(id) ON DELETE CASCADE,
+    id         NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id   NUMERIC(9,0) REFERENCES rivers(id) ON DELETE CASCADE,
     path       VARCHAR(256),
-    km         FLOAT8,
-    z	       FLOAT8,
+    km         NUMERIC(7,3),
+    z	         NUMERIC(16,12),
     location   VARCHAR(64),
-    year       int
+    year       NUMERIC(4,0)
 );
 SELECT AddGeometryColumn('flood_marks','geom',31467,'POINT',2);
 ALTER TABLE flood_marks ALTER COLUMN id SET DEFAULT NEXTVAL('FLOOD_MARKS_ID_SEQ');
diff -r a9950a3a71e5 -r 71b17f731762 backend/doc/schema/postgresql.sql
--- a/backend/doc/schema/postgresql.sql	Wed Mar 07 17:36:04 2018 +0100
+++ b/backend/doc/schema/postgresql.sql	Tue Mar 13 09:42:41 2018 +0100
@@ -3,7 +3,7 @@
 CREATE SEQUENCE UNITS_ID_SEQ;
 
 CREATE TABLE units (
-    id   int PRIMARY KEY NOT NULL,
+    id   NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name VARCHAR(32)     NOT NULL UNIQUE
 );
 
@@ -11,7 +11,7 @@
 -- Lookup table for optional matching with differing river names in SedDB
 -- Add name here and set rivers.seddb_name_id to id
 CREATE TABLE seddb_name (
-    id       int PRIMARY KEY NOT NULL,
+    id       NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name     VARCHAR(256) NOT NULL
 );
 
@@ -19,13 +19,13 @@
 CREATE SEQUENCE RIVERS_ID_SEQ;
 
 CREATE TABLE rivers (
-    id              int PRIMARY KEY NOT NULL,
+    id              NUMERIC(9,0) PRIMARY KEY NOT NULL,
     model_uuid      CHAR(36)        UNIQUE,
-    official_number int8,
+    official_number NUMERIC(12,0),
     name            VARCHAR(256)    NOT NULL UNIQUE,
-    km_up           int DEFAULT 0   NOT NULL,
-    wst_unit_id int                 NOT NULL REFERENCES units(id),
-    seddb_name_id   int REFERENCES seddb_name(id),
+    km_up           NUMERIC(1,0) DEFAULT 0   NOT NULL,
+    wst_unit_id NUMERIC(9,0)                 NOT NULL REFERENCES units(id),
+    seddb_name_id   NUMERIC(9,0) REFERENCES seddb_name(id),
     CHECK(km_up IN(0,1))
 );
 
@@ -33,18 +33,19 @@
 CREATE SEQUENCE ATTRIBUTES_ID_SEQ;
 
 CREATE TABLE attributes (
-    id    int PRIMARY KEY NOT NULL,
+    id    NUMERIC(9,0) PRIMARY KEY NOT NULL,
     value VARCHAR(256)    NOT NULL UNIQUE
 );
 
 -- segments from/to at a river
 CREATE SEQUENCE RANGES_ID_SEQ;
 
+--FIXME: make precision and scale of a and b columns equal with the km columns of the other tables
 CREATE TABLE ranges (
-    id       int PRIMARY KEY NOT NULL,
-    river_id int             NOT NULL REFERENCES rivers(id) ON DELETE CASCADE,
-    a        NUMERIC         NOT NULL,
-    b        NUMERIC,
+    id       NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id NUMERIC(9,0)             NOT NULL REFERENCES rivers(id) ON DELETE CASCADE,
+    a        NUMERIC(14,10)         NOT NULL,
+    b        NUMERIC(14,10),
     UNIQUE (river_id, a, b),
     CHECK (a < b)
 );
@@ -54,7 +55,7 @@
 CREATE SEQUENCE POSITIONS_ID_SEQ;
 
 CREATE TABLE positions (
-    id    int PRIMARY KEY NOT NULL,
+    id    NUMERIC(9,0) PRIMARY KEY NOT NULL,
     value VARCHAR(256)    NOT NULL UNIQUE
 );
 
@@ -62,16 +63,16 @@
 CREATE SEQUENCE EDGES_ID_SEQ;
 
 CREATE TABLE edges (
-    id     int PRIMARY KEY NOT NULL,
-    top    NUMERIC,
-    bottom NUMERIC
+    id     NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    top    NUMERIC(6,2),
+    bottom NUMERIC(6,2)
 );
 
 -- Types of annotatations (Hafen, Bruecke, Zufluss, ...)
 CREATE SEQUENCE ANNOTATION_TYPES_ID_SEQ;
 
 CREATE TABLE annotation_types (
-    id    int PRIMARY KEY NOT NULL,
+    id    NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name  VARCHAR(256)    NOT NULL UNIQUE
 );
 
@@ -80,30 +81,31 @@
 CREATE SEQUENCE ANNOTATIONS_ID_SEQ;
 
 CREATE TABLE annotations (
-    id           int PRIMARY KEY NOT NULL,
-    range_id     int NOT NULL REFERENCES ranges(id) ON DELETE CASCADE,
-    attribute_id int NOT NULL REFERENCES attributes(id),
-    position_id  int REFERENCES positions(id),
-    edge_id      int REFERENCES edges(id),
-    type_id      int REFERENCES annotation_types(id)
+    id           NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    range_id     NUMERIC(9,0) NOT NULL REFERENCES ranges(id) ON DELETE CASCADE,
+    attribute_id NUMERIC(9,0) NOT NULL REFERENCES attributes(id),
+    position_id  NUMERIC(9,0) REFERENCES positions(id),
+    edge_id      NUMERIC(9,0) REFERENCES edges(id),
+    type_id      NUMERIC(9,0) REFERENCES annotation_types(id)
 );
 
 -- Pegel
 CREATE SEQUENCE GAUGES_ID_SEQ;
 
+--FIXME: make precision and scale of station column equal with the km columns of the other tables
 CREATE TABLE gauges (
-    id              int PRIMARY KEY NOT NULL,
+    id              NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name            VARCHAR(256)    NOT NULL,
     -- remove river id here because range_id references river already
-    river_id        int             NOT NULL REFERENCES rivers(id) ON DELETE CASCADE,
-    station         NUMERIC         NOT NULL,
-    aeo             NUMERIC         NOT NULL,
-    official_number int8,
+    river_id        NUMERIC(9,0)             NOT NULL REFERENCES rivers(id) ON DELETE CASCADE,
+    station         NUMERIC(8,4)         NOT NULL,
+    aeo             NUMERIC(9,2)         NOT NULL,
+    official_number NUMERIC(12,0),
 
     -- Pegelnullpunkt
-    datum    NUMERIC NOT NULL,
+    datum    NUMERIC(6,2) NOT NULL,
     -- Streckengueltigkeit
-    range_id int REFERENCES ranges (id) ON DELETE CASCADE,
+    range_id NUMERIC(9,0) REFERENCES ranges (id) ON DELETE CASCADE,
 
     UNIQUE (name, river_id),
     UNIQUE (official_number, river_id),
@@ -114,7 +116,7 @@
 CREATE SEQUENCE MAIN_VALUE_TYPES_ID_SEQ;
 
 CREATE TABLE main_value_types (
-    id   int PRIMARY KEY NOT NULL,
+    id   NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name VARCHAR(256)    NOT NULL UNIQUE
 );
 
@@ -122,18 +124,18 @@
 CREATE SEQUENCE NAMED_MAIN_VALUES_ID_SEQ;
 
 CREATE TABLE named_main_values (
-    id      int PRIMARY KEY NOT NULL,
+    id      NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name    VARCHAR(256)    NOT NULL,
-    type_id int NOT NULL REFERENCES main_value_types(id)
+    type_id NUMERIC(9,0) NOT NULL REFERENCES main_value_types(id)
 );
 
 -- Table for time intervals
 CREATE SEQUENCE TIME_INTERVALS_ID_SEQ;
 
 CREATE TABLE time_intervals (
-    id         int PRIMARY KEY NOT NULL,
-    start_time TIMESTAMP       NOT NULL,
-    stop_time  TIMESTAMP,
+    id         NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    start_time TIMESTAMP(0)       NOT NULL,
+    stop_time  TIMESTAMP(0),
     CHECK (start_time <= stop_time)
 );
 
@@ -142,12 +144,12 @@
 CREATE SEQUENCE MAIN_VALUES_ID_SEQ;
 
 CREATE TABLE main_values (
-    id             int PRIMARY KEY NOT NULL,
-    gauge_id       int NOT NULL REFERENCES gauges(id) ON DELETE CASCADE,
-    named_value_id int NOT NULL REFERENCES named_main_values(id),
-    value          NUMERIC NOT NULL,
+    id             NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    gauge_id       NUMERIC(9,0) NOT NULL REFERENCES gauges(id) ON DELETE CASCADE,
+    named_value_id NUMERIC(9,0) NOT NULL REFERENCES named_main_values(id),
+    value          NUMERIC(12,2) NOT NULL,
 
-    time_interval_id int REFERENCES time_intervals(id),
+    time_interval_id NUMERIC(9,0) REFERENCES time_intervals(id),
 
     -- TODO: better checks
     UNIQUE (gauge_id, named_value_id, time_interval_id)
@@ -157,12 +159,12 @@
 CREATE SEQUENCE DISCHARGE_TABLES_ID_SEQ;
 
 CREATE TABLE discharge_tables (
-    id               int PRIMARY KEY NOT NULL,
-    gauge_id         int NOT NULL REFERENCES gauges(id) ON DELETE CASCADE,
+    id               NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    gauge_id         NUMERIC(9,0) NOT NULL REFERENCES gauges(id) ON DELETE CASCADE,
     description      VARCHAR(256) NOT NULL,
     bfg_id           VARCHAR(50),
-    kind             int NOT NULL DEFAULT 0,
-    time_interval_id int REFERENCES time_intervals(id),
+    kind             NUMERIC(9,0) NOT NULL DEFAULT 0,
+    time_interval_id NUMERIC(9,0) REFERENCES time_intervals(id),
     UNIQUE(gauge_id, bfg_id, kind)
 );
 
@@ -170,10 +172,10 @@
 CREATE SEQUENCE DISCHARGE_TABLE_VALUES_ID_SEQ;
 
 CREATE TABLE discharge_table_values (
-    id       int PRIMARY KEY NOT NULL,
-    table_id int NOT NULL REFERENCES discharge_tables(id) ON DELETE CASCADE,
-    q        NUMERIC NOT NULL,
-    w        NUMERIC NOT NULL,
+    id       NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    table_id NUMERIC(9,0) NOT NULL REFERENCES discharge_tables(id) ON DELETE CASCADE,
+    q        NUMERIC(9,4) NOT NULL,
+    w        NUMERIC(6,2) NOT NULL,
 
     UNIQUE (table_id, q, w)
 );
@@ -181,7 +183,7 @@
 -- WST files
 --lookup table for wst kinds
 CREATE TABLE wst_kinds (
-    id 	     int PRIMARY KEY NOT NULL,
+    id 	     NUMERIC(9,0) PRIMARY KEY NOT NULL,
     kind     VARCHAR(64) NOT NULL
 );
 INSERT INTO wst_kinds (id, kind) VALUES (0, 'basedata');
@@ -197,10 +199,10 @@
 CREATE SEQUENCE WSTS_ID_SEQ;
 
 CREATE TABLE wsts (
-    id          int PRIMARY KEY NOT NULL,
-    river_id    int NOT NULL REFERENCES rivers(id) ON DELETE CASCADE,
+    id          NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id    NUMERIC(9,0) NOT NULL REFERENCES rivers(id) ON DELETE CASCADE,
     description VARCHAR(256) NOT NULL,
-    kind        int NOT NULL REFERENCES wst_kinds(id) DEFAULT 0,
+    kind        NUMERIC(9,0) NOT NULL REFERENCES wst_kinds(id) DEFAULT 0,
     -- TODO: more meta infos
     UNIQUE (river_id, description)
 );
@@ -209,14 +211,14 @@
 CREATE SEQUENCE WST_COLUMNS_ID_SEQ;
 
 CREATE TABLE wst_columns (
-    id          int PRIMARY KEY NOT NULL,
-    wst_id      int NOT NULL REFERENCES wsts(id) ON DELETE CASCADE,
+    id          NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    wst_id      NUMERIC(9,0) NOT NULL REFERENCES wsts(id) ON DELETE CASCADE,
     name        VARCHAR(256) NOT NULL,
     description VARCHAR(256),
     source      VARCHAR(256),
-    position    int NOT NULL DEFAULT 0,
+    position    NUMERIC(9,0) NOT NULL DEFAULT 0,
 
-    time_interval_id int REFERENCES time_intervals(id),
+    time_interval_id NUMERIC(9,0) REFERENCES time_intervals(id),
 
     UNIQUE (wst_id, name),
     UNIQUE (wst_id, position)
@@ -226,10 +228,10 @@
 CREATE SEQUENCE WST_COLUMN_VALUES_ID_SEQ;
 
 CREATE TABLE wst_column_values (
-    id            int PRIMARY KEY NOT NULL,
-    wst_column_id int NOT NULL REFERENCES wst_columns(id) ON DELETE CASCADE,
-    position      NUMERIC NOT NULL,
-    w             NUMERIC NOT NULL,
+    id            NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    wst_column_id NUMERIC(9,0) NOT NULL REFERENCES wst_columns(id) ON DELETE CASCADE,
+    position      NUMERIC(9,5) NOT NULL,
+    w             NUMERIC(9,5) NOT NULL,
 
     UNIQUE (position, wst_column_id),
     UNIQUE (position, wst_column_id, w)
@@ -239,18 +241,18 @@
 CREATE SEQUENCE WST_Q_RANGES_ID_SEQ;
 
 CREATE TABLE wst_q_ranges (
-    id       int PRIMARY KEY NOT NULL,
-    range_id int NOT NULL REFERENCES ranges(id) ON DELETE CASCADE,
-    q        NUMERIC NOT NULL
+    id       NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    range_id NUMERIC(9,0) NOT NULL REFERENCES ranges(id) ON DELETE CASCADE,
+    q        NUMERIC(10,5) NOT NULL
 );
 
 -- bind q ranges to wst columns
 CREATE SEQUENCE WST_COLUMN_Q_RANGES_ID_SEQ;
 
 CREATE TABLE wst_column_q_ranges (
-    id             int PRIMARY KEY NOT NULL,
-    wst_column_id  int NOT NULL REFERENCES wst_columns(id) ON DELETE CASCADE,
-    wst_q_range_id int NOT NULL REFERENCES wst_q_ranges(id) ON DELETE CASCADE,
+    id             NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    wst_column_id  NUMERIC(9,0) NOT NULL REFERENCES wst_columns(id) ON DELETE CASCADE,
+    wst_q_range_id NUMERIC(9,0) NOT NULL REFERENCES wst_q_ranges(id) ON DELETE CASCADE,
 
     UNIQUE (wst_column_id, wst_q_range_id)
 );
@@ -258,9 +260,9 @@
 CREATE SEQUENCE OFFICIAL_LINES_ID_SEQ;
 
 CREATE TABLE official_lines (
-    id                  int PRIMARY KEY NOT NULL,
-    wst_column_id       int NOT NULL REFERENCES wst_columns(id) ON DELETE CASCADE,
-    named_main_value_id int NOT NULL REFERENCES named_main_values(id) ON DELETE CASCADE,
+    id                  NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    wst_column_id       NUMERIC(9,0) NOT NULL REFERENCES wst_columns(id) ON DELETE CASCADE,
+    named_main_value_id NUMERIC(9,0) NOT NULL REFERENCES named_main_values(id) ON DELETE CASCADE,
 
     UNIQUE (wst_column_id, named_main_value_id)
 );
@@ -315,29 +317,29 @@
 CREATE SEQUENCE CROSS_SECTIONS_ID_SEQ;
 
 CREATE TABLE cross_sections (
-    id               int PRIMARY KEY NOT NULL,
-    river_id         int NOT NULL REFERENCES rivers(id) ON DELETE CASCADE,
-    time_interval_id int REFERENCES time_intervals(id),
+    id               NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id         NUMERIC(9,0) NOT NULL REFERENCES rivers(id) ON DELETE CASCADE,
+    time_interval_id NUMERIC(9,0) REFERENCES time_intervals(id),
     description      VARCHAR(256)
 );
 
 CREATE SEQUENCE CROSS_SECTION_LINES_ID_SEQ;
 
 CREATE TABLE cross_section_lines (
-    id               int PRIMARY KEY NOT NULL,
-    km               NUMERIC         NOT NULL,
-    cross_section_id int             NOT NULL REFERENCES cross_sections(id) ON DELETE CASCADE,
+    id               NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    km               NUMERIC(9,5)         NOT NULL,
+    cross_section_id NUMERIC(9,0)             NOT NULL REFERENCES cross_sections(id) ON DELETE CASCADE,
     UNIQUE (km, cross_section_id)
 );
 
 CREATE SEQUENCE CROSS_SECTION_POINTS_ID_SEQ;
 
 CREATE TABLE cross_section_points (
-    id                    int PRIMARY KEY NOT NULL,
-    cross_section_line_id int             NOT NULL REFERENCES cross_section_lines(id) ON DELETE CASCADE,
-    col_pos               int             NOT NULL,
-    x                     NUMERIC         NOT NULL,
-    y                     NUMERIC         NOT NULL
+    id                    NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    cross_section_line_id NUMERIC(9,0)             NOT NULL REFERENCES cross_section_lines(id) ON DELETE CASCADE,
+    col_pos               NUMERIC(9,0)             NOT NULL,
+    x                     NUMERIC(7,2)         NOT NULL,
+    y                     NUMERIC(7,2)         NOT NULL
 );
 
 -- Indices for faster access of the points
@@ -351,39 +353,40 @@
 CREATE SEQUENCE HYKS_ID_SEQ;
 
 CREATE TABLE hyks (
-    id          int PRIMARY KEY NOT NULL,
-    river_id    int             NOT NULL REFERENCES rivers(id) ON DELETE CASCADE,
+    id          NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    river_id    NUMERIC(9,0)             NOT NULL REFERENCES rivers(id) ON DELETE CASCADE,
     description VARCHAR(256)    NOT NULL
 );
 
 CREATE SEQUENCE HYK_ENTRIES_ID_SEQ;
 
+--FIXME: make precision and scale of km column equal with the km columns of the other tables
 CREATE TABLE hyk_entries (
-    id          int PRIMARY KEY NOT NULL,
-    hyk_id      int             NOT NULL REFERENCES hyks(id) ON DELETE CASCADE,
-    km          NUMERIC         NOT NULL,
-    measure     TIMESTAMP,
+    id          NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    hyk_id      NUMERIC(9,0)             NOT NULL REFERENCES hyks(id) ON DELETE CASCADE,
+    km          NUMERIC(7,2)         NOT NULL,
+    measure     TIMESTAMP(0),
     UNIQUE (hyk_id, km)
 );
 
 CREATE SEQUENCE HYK_FORMATIONS_ID_SEQ;
 
 CREATE TABLE hyk_formations (
-    id            int PRIMARY KEY NOT NULL,
-    formation_num int             NOT NULL DEFAULT 0,
-    hyk_entry_id  int             NOT NULL REFERENCES hyk_entries(id) ON DELETE CASCADE,
-    top           NUMERIC         NOT NULL,
-    bottom        NUMERIC         NOT NULL,
-    distance_vl   NUMERIC         NOT NULL,
-    distance_hf   NUMERIC         NOT NULL,
-    distance_vr   NUMERIC         NOT NULL,
+    id            NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    formation_num NUMERIC(9,0)             NOT NULL DEFAULT 0,
+    hyk_entry_id  NUMERIC(9,0)             NOT NULL REFERENCES hyk_entries(id) ON DELETE CASCADE,
+    top           NUMERIC(6,2)         NOT NULL,
+    bottom        NUMERIC(6,2)         NOT NULL,
+    distance_vl   NUMERIC(8,2)         NOT NULL,
+    distance_hf   NUMERIC(8,2)         NOT NULL,
+    distance_vr   NUMERIC(8,2)         NOT NULL,
     UNIQUE (hyk_entry_id, formation_num)
 );
 
 CREATE SEQUENCE HYK_FLOW_ZONE_TYPES_ID_SEQ;
 
 CREATE TABLE hyk_flow_zone_types (
-    id          int PRIMARY KEY NOT NULL,
+    id          NUMERIC(9,0) PRIMARY KEY NOT NULL,
     name        VARCHAR(50)     NOT NULL UNIQUE,
     description VARCHAR(256)
 );
@@ -391,11 +394,11 @@
 CREATE SEQUENCE HYK_FLOW_ZONES_ID_SEQ;
 
 CREATE TABLE hyk_flow_zones (
-    id           int PRIMARY KEY NOT NULL,
-    formation_id int             NOT NULL REFERENCES hyk_formations(id) ON DELETE CASCADE,
-    type_id      int             NOT NULL REFERENCES hyk_flow_zone_types(id),
-    a            NUMERIC         NOT NULL,
-    b            NUMERIC         NOT NULL,
+    id           NUMERIC(9,0) PRIMARY KEY NOT NULL,
+    formation_id NUMERIC(9,0)             NOT NULL REFERENCES hyk_formations(id) ON DELETE CASCADE,
+    type_id      NUMERIC(9,0)             NOT NULL REFERENCES hyk_flow_zone_types(id),
+    a            NUMERIC(7,2)         NOT NULL,
+    b            NUMERIC(7,2)         NOT NULL,
     CHECK (a <= b)
 );