diff --git a/server/database/icedb b/server/database/icedb
index 21581f431073869d4d23a0682bd4fe2bfd994a8f..182a178f4d22ecf48a1cb1e9354b9a38b22e417f 100644
Binary files a/server/database/icedb and b/server/database/icedb differ
diff --git a/server/database/schema.sql b/server/database/schema.sql
index 39daec0a0002413b7d803c955940c220818d9220..906cd02f4cec99c28b8feb772e3b6b44201297dc 100644
--- a/server/database/schema.sql
+++ b/server/database/schema.sql
@@ -12,54 +12,63 @@ CREATE TABLE Sensor (
 
 -- Measurement taken at a given time
 CREATE TABLE Measurement (
-    MeasurementID INT PRIMARY KEY,
+    MeasurementID INT NOT NULL,
     SensorID INT NOT NULL,
     TimeMeasured DATETIME NOT NULL,
     WaterBodyName TEXT NOT NULL,
     CenterLat FLOAT NOT NULL,
     CenterLon FLOAT NOT NULL,
-    WholeAverageThickness FLOAT NOT NULL,
     FOREIGN KEY (SensorID) REFERENCES Sensor(SensorID),
-    FOREIGN KEY (WaterBodyName) REFERENCES BodyOfWater(Name)
+    FOREIGN KEY (WaterBodyName) REFERENCES BodyOfWater(Name),
+    PRIMARY KEY (MeasurementID, WaterBodyName, TimeMeasured)
 );
 
-CREATE TABLE SubDivision (
-    MeasurementID INT,
-    SubDivisionID INT,
-    GroupID INT NOT NULL,
+CREATE TABLE SubdivisionMeasurementData (
+    MeasurementID INT NOT NULL,
+    TimeMeasured DATETIME NOT NULL,
+    SubdivID INT NOT NULL,
+    WaterBodyName TEXT NOT NULL,
     MinimumThickness FLOAT NOT NULL,
     AverageThickness FLOAT NOT NULL,
-    CenterLatitude FLOAT NOT NULL,
-    CenterLongitude FLOAT NOT NULL,
+    CalculatedSafety FLOAT NOT NULL,
     Accuracy FLOAT,
-    FOREIGN KEY (MeasurementID) REFERENCES Measurement(MeasurementID),
-    PRIMARY KEY (MeasurementID, SubDivisionID)
+    FOREIGN KEY (MeasurementID, TimeMeasured, WaterBodyName) REFERENCES Measurement(MeasurementID, TimeMeasured, WaterBodyName),
+    PRIMARY KEY (SubdivID, WaterBodyName, TimeMeasured)
 );
 
--- Indexes
-CREATE INDEX idx_measurement_waterbodyname ON Measurement(WaterBodyName);
-CREATE INDEX idx_measurement_timemeasured ON Measurement(TimeMeasured);
-
 -- Test data
 INSERT INTO Sensor (SensorID, SensorType, Active) VALUES
 (1, 'LiDar', 1),
 (2, 'Magnetic', 1),
-(3, 'Other', 0);
+(3, 'LiDar', 0);
 
 INSERT INTO BodyOfWater(Name) VALUES
-('Mjosa');
+('Mjøsa'),
+('Skumsjøen');
+
+INSERT INTO Measurement (MeasurementID, SensorID, TimeMeasured, WaterBodyName, CenterLon, CenterLat) VALUES
+(1, 2, '2024-01-01 10:00:00', 'Mjøsa', 10.1234, 60.4567),
+(2, 2, '2024-02-04 11:00:00', 'Mjøsa', 10.2345, 60.5678),
+(3, 1, '2024-02-13 12:00:00', 'Mjøsa', 10.3456, 60.6789),
+(1, 3, '2024-02-13 12:00:00', 'Skumsjøen', 10.4567, 60.7890),
+(2, 3, '2024-02-13 12:00:00', 'Skumsjøen', 10.5678, 60.8901),
+(3, 3, '2024-02-13 12:00:00', 'Skumsjøen', 10.6789, 60.9012);
 
-INSERT INTO Measurement (MeasurementID, SensorID, TimeMeasured, WaterBodyName, WholeAverageThickness) VALUES
-(1, 2, '2024-01-01 10:00:00', 'Mjosa', 5.8),
-(2, 2, '2024-02-04 11:00:00', 'Mjosa', 7.6),
-(3, 1, '2024-02-13 12:00:00', 'Mjosa', 4.1);
 
-INSERT INTO SubDivision (MeasurementID, SubDivisionID, GroupID, MinimumThickness, AverageThickness, CenterLatitude, CenterLongitude, Accuracy)  VALUES
-(1, 1, 1, 3.2, 4.5, 60.765, 10.723, 1.2),
-(1, 2, 1, 2.8, 4.3, 60.780, 10.776, 1.1),
-(1, 3, 2, 4.1, 5.7, 60.768, 10.845, 1.3),
-(1, 4, 2, 3.5, 5.0, 60.749, 10.783, 1.4),
-(2, 1, 1, 4.1, 5.7, 60.768, 10.845, 1.3),
-(2, 2, 2, 3.5, 5.0, 60.749, 10.783, 1.4),
-(3, 1, 1, 4.1, 5.7, 60.768, 10.845, 1.3),
-(3, 2, 2, 3.5, 5.0, 60.749, 10.783, 1.4);
+INSERT INTO SubdivisionMeasurementData (MeasurementID, SubdivID, TimeMeasured, WaterBodyName, MinimumThickness,
+                                        AverageThickness, CalculatedSafety, Accuracy) VALUES
+(1, 1, '2024-01-01 10:00:00', 'Mjøsa', 3.2, 4.5, 2.1, 1.2),
+(1, 2, '2024-01-01 10:00:00', 'Mjøsa', 2.8, 4.3, 2.5, 1.1),
+(1, 3, '2024-01-01 10:00:00', 'Mjøsa', 4.1, 5.7, 2.3, 1.3),
+(1, 4, '2024-01-01 10:00:00', 'Mjøsa', 3.5, 5.0, 2.2, 1.4),
+(2, 1, '2024-02-04 11:00:00', 'Mjøsa', 4.1, 5.7, 2.3, 1.3),
+(2, 2, '2024-02-04 11:00:00', 'Mjøsa', 3.5, 5.0, 2.2, 1.4),
+(3, 1, '2024-02-13 12:00:00', 'Mjøsa', 4.1, 5.7, 2.3, 1.3),
+(3, 2, '2024-02-13 12:00:00', 'Mjøsa', 3.5, 5.0, 2.2, 1.4),
+(1, 1, '2024-01-01 10:00:00', 'Skumsjøen', 3.8, 5.3, 2.2, 1.2),
+(1, 2, '2024-01-01 10:00:00', 'Skumsjøen', 2.4, 4.8, 2.3, 1.1),
+(1, 3, '2024-01-01 10:00:00', 'Skumsjøen', 4.5, 6.1, 2.5, 1.3),
+(2, 1, '2024-02-04 11:00:00', 'Skumsjøen', 4.5, 6.1, 2.5, 1.3),
+(2, 2, '2024-02-04 11:00:00', 'Skumsjøen', 3.9, 5.6, 2.3, 1.4),
+(3, 1, '2024-02-13 12:00:00', 'Skumsjøen', 3.8, 5.3, 2.2, 1.2),
+(3, 2, '2024-02-13 12:00:00', 'Skumsjøen', 2.4, 4.8, 2.3, 1.1);