Solution

task.sql

@@ -9,14 +9,29 @@ CREATE TABLE Countries (
     PRIMARY KEY (ID)
 );
 
+CREATE TABLE Addresses(
+ID INT,
+Street VARCHAR(50),
+City VARCHAR(50),
+CountryID INT,
+FOREIGN KEY (CountryID) REFERENCES Countries(ID) ON DELETE NO ACTION,
+PRIMARY KEY (ID)
+);
+
+CREATE TABLE Warehouses(
+	ID INT,
+	WarehouseName VARCHAR(50),
+    WarehouseAmount INT,
+	PRIMARY KEY (ID)
+);
+
 CREATE TABLE ProductInventory (
     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,
+    WarehouseID INT,
+    FOREIGN KEY (WarehouseID) REFERENCES Warehouses(ID) ON DELETE NO ACTION,
+    AddressID INT,
+	FOREIGN KEY (AddressID) REFERENCES Addresses(ID) ON DELETE NO ACTION,
     PRIMARY KEY (ID)
 );
 
@@ -26,8 +41,18 @@ INSERT INTO Countries (ID,Name)
 	VALUES (1, 'Country1');
 INSERT INTO Countries (ID,Name)
 	VALUES (2, 'Country2');
+
+INSERT INTO Addresses (ID,Street,City,CountryID)
+	VALUES (1, 'Street-1', 'City-1', 1);
+INSERT INTO Addresses (ID,Street,City,CountryID)
+	VALUES (2, 'Street-2', 'City-2', 2);
+
+INSERT INTO Warehouses (ID,WarehouseName,WarehouseAmount)
+	VALUES (1, 'Warehouse-1', 2);
+INSERT INTO Warehouses (ID,WarehouseName,WarehouseAmount)
+	VALUES (2, 'Warehouse-2', 5);
 
-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 ProductInventory (ID,ProductName,WarehouseID,AddressID)
+	VALUES (1, 'AwersomeProduct', 1, 1);
+INSERT INTO ProductInventory (ID,ProductName,WarehouseID,AddressID)
+	VALUES (2, 'AwersomeProduct', 2, 2);