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done #150

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done
yeromin Feb 9, 2026
be05f89
drop
yeromin Feb 9, 2026
e23faee
set the DB save type as InnoDB
yeromin Feb 9, 2026
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55 changes: 39 additions & 16 deletions task.sql
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Original file line number Diff line number Diff line change
@@ -1,33 +1,56 @@
-- Create database and tables

DROP DATABASE IF EXISTS ShopDB;
CREATE DATABASE ShopDB;
USE ShopDB;

CREATE TABLE Countries (
ID INT,
Name VARCHAR(50),
PRIMARY KEY (ID)
);
) ENGINE=InnoDB;

CREATE TABLE ProductInventory (
CREATE TABLE Products (
ID INT,
ProductName VARCHAR(50),
WarehouseAmount INT,
PRIMARY KEY (ID)
) ENGINE=InnoDB;

CREATE TABLE Warehouses (
ID INT,
WarehouseName VARCHAR(50),
WarehouseAddress VARCHAR(50),
WarehouseAddress VARCHAR(50),
CountryID INT,
FOREIGN KEY (CountryID) REFERENCES Countries(ID) ON DELETE NO ACTION,
PRIMARY KEY (ID)
);
PRIMARY KEY (ID),
FOREIGN KEY (CountryID) REFERENCES Countries(ID) ON DELETE NO ACTION
) ENGINE=InnoDB;

CREATE TABLE ProductInventory (
ID INT,
ProductID INT,
WarehouseAmount INT,
WarehouseID INT,
PRIMARY KEY (ID),
FOREIGN KEY (ProductID) REFERENCES Products(ID) ON DELETE NO ACTION,
FOREIGN KEY (WarehouseID) REFERENCES Warehouses(ID) ON DELETE NO ACTION
Comment on lines +19 to +35
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@mateacademy-ai-mentor mateacademy-ai-mentor Feb 9, 2026

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You use FOREIGN KEY constraints in Warehouses and ProductInventory. MySQL requires InnoDB for enforced foreign keys. Add ENGINE=InnoDB to these CREATE TABLE statements (or ensure the server default is InnoDB) to avoid foreign key being ignored or causing runtime issues.

) ENGINE=InnoDB;

-- 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 Countries (ID, Name)
VALUES (1, 'Country1');
INSERT INTO Countries (ID, Name)
VALUES (2, 'Country2');

INSERT INTO Products (ID, ProductName)
VALUES (1, 'AwersomeProduct');

INSERT INTO Warehouses (ID, WarehouseName, WarehouseAddress, CountryID)
VALUES (1, 'Warehouse-1', 'City-1, Street-1', 1);
INSERT INTO Warehouses (ID, WarehouseName, WarehouseAddress, CountryID)
VALUES (2, 'Warehouse-2', 'City-2, Street-2', 2);

INSERT INTO ProductInventory (ID, ProductID, WarehouseAmount, WarehouseID)
VALUES (1, 1, 2, 1);
INSERT INTO ProductInventory (ID, ProductID, WarehouseAmount, WarehouseID)
VALUES (2, 1, 5, 2);