Normalize ShopDB to 3NF

task.sql

@@ -21,6 +21,34 @@ CREATE TABLE ProductInventory (
 );
 
 -- Populate test data
+CREATE TABLE Countries (
+ID INT AUTO_INCREMENT PRIMARY KEY,
+ Name VARCHAR(255)
+);
+
+CREATE TABLE Products(
+ID INT AUTO_INCREMENT PRIMARY KEY,
+NAME VARCHAR(255)
+);
+
+CREATE TABLE Warehouses(
+ID INT AUTO_INCREMENT PRIMARY KEY,
+Name VARCHAR(255),
+Address VARCHAR(255),
+CountryID INT,
+FOREIGN KEY (CountryID) REFERENCES Countries(ID)
+);
+
+
+CREATE TABLE ProductInventory (
+    ProductID INT,
+    WarehouseID INT,
+    Amount INT,
+    PRIMARY KEY (ProductID, WarehouseID),
+    FOREIGN KEY (ProductID) REFERENCES Products(ID),
+    FOREIGN KEY (WarehouseID) REFERENCES Warehouses(ID)
+);
+
 
 INSERT INTO Countries (ID,Name)
 	VALUES (1, 'Country1');