Restructered DataBase to 2,3 NormalizationForm, Remade Inserts, Imple…

task.sql

@@ -9,25 +9,84 @@ CREATE TABLE Countries (
     PRIMARY KEY (ID)
 );
 
-CREATE TABLE ProductInventory (
+CREATE TABLE Cities (
+	ID INT,
+    Name VARCHAR (50),
+    CountryID INT,
+	FOREIGN KEY (CountryID)
+		REFERENCES Countries (ID)
+		ON DELETE NO ACTION,
+    PRIMARY KEY (ID)
+);
+
+CREATE TABLE Streets (
+	ID INT,
+    Name VARCHAR (50),
+    CityID INT,
+    FOREIGN KEY (CityID)
+		REFERENCES Cities (ID)
+		ON DELETE NO ACTION,
+	PRIMARY KEY (ID)
+);
+
+CREATE TABLE Warehouses (
+	ID INT,
+    WarehouseName VARCHAR(50),
+    StreetID INT,
+    FOREIGN KEY (StreetID)
+		REFERENCES Streets (ID)
+        ON DELETE NO ACTION,
+    PRIMARY KEY (ID)
+);
+
+CREATE TABLE Products (
     ID INT,
     ProductName VARCHAR(50),
-    WarehouseAmount INT,
-    WarehouseName VARCHAR(50),
-    WarehouseAddress VARCHAR(50), 
-    CountryID INT,
-	FOREIGN KEY (CountryID) REFERENCES Countries(ID) ON DELETE NO ACTION,
     PRIMARY KEY (ID)
 );
 
+CREATE TABLE ProductWarehouse (
+	ProductID INT,
+    FOREIGN KEY  (ProductID)
+		REFERENCES Products (ID)
+        ON DELETE NO ACTION,
+    WarehouseID INT,
+	FOREIGN KEY  (WarehouseID)
+		REFERENCES Warehouses (ID)
+        ON DELETE NO ACTION,
+    Amount INT,
+    PRIMARY KEY (ProductID, WarehouseID)
+);
+
 -- Populate test data
 
 INSERT INTO Countries (ID,Name)
 	VALUES (1, 'Country1');
 INSERT INTO Countries (ID,Name)
 	VALUES (2, 'Country2');
-
-INSERT INTO ProductInventory (ID,ProductName,WarehouseAmount,WarehouseName,WarehouseAddress,CountryID)
-	VALUES (1, 'AwersomeProduct', 2, 'Warehouse-1', 'City-1, Street-1',1);
-INSERT INTO ProductInventory (ID,ProductName,WarehouseAmount,WarehouseName,WarehouseAddress,CountryID)
-	VALUES (2, 'AwersomeProduct', 5, 'Warehouse-2', 'City-2, Street-2',2);
+
+
+
+INSERT INTO Products (ID, ProductName)
+	VALUES (1, 'AwersomeProduct');
+INSERT INTO Cities (ID, Name, CountryID)
+	VALUES (1, 'City-1', 1);
+INSERT INTO Streets (ID, Name, CityID)
+	VALUES (1, 'Street-1', 1);
+INSERT INTO Warehouses (ID, WarehouseName, StreetID)
+	VALUES (1, 'Warehouse-1', 1);
+INSERT INTO ProductWarehouse (ProductID, WarehouseID, Amount)
+	VALUES (1, 1, 2);
+
+
+
+INSERT INTO Products (ID, ProductName)
+	VALUES (2, 'AwersomeProduct');
+INSERT INTO Cities (ID, Name, CountryID)
+	VALUES (2, 'City-2', 2);
+INSERT INTO Streets (ID, Name, CityID)
+	VALUES (2, 'Street-2', 2);
+INSERT INTO Warehouses (ID, WarehouseName, StreetID)
+	VALUES (2, 'Warehouse-2', 2);
+INSERT INTO ProductWarehouse (ProductID, WarehouseID, Amount)
+	VALUES (2, 2, 5);