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Solution. #188

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Solution. #188

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79e9500
Solution.
Jun 13, 2026
b5a96ac
Add drop database command in top of the file.
Jun 13, 2026
202db75
A design for deleting a database, with a check for the existence of t…
Jun 13, 2026
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45 changes: 33 additions & 12 deletions task.sql
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Original file line number Diff line number Diff line change
@@ -1,5 +1,4 @@
-- Create database and tables

DROP DATABASE IF EXISTS ShopDB;
CREATE DATABASE ShopDB;

@mateacademy-ai-mentor mateacademy-ai-mentor Jun 13, 2026

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The task requires that you drop any existing ShopDB using DROP DATABASE ShopDB; before creating it (checklist items #3, #10, and #11). Add a DROP DATABASE ShopDB; (optionally with IF EXISTS) above this CREATE DATABASE statement.

USE ShopDB;

Expand All @@ -9,25 +8,47 @@ CREATE TABLE Countries (
PRIMARY KEY (ID)
);

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

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
);

-- Populate test data
CREATE TABLE ProductInventory (
ID INT,
ProductID INT,
WarehouseAmount INT,
WarehousesID INT,
FOREIGN KEY (ProductID) REFERENCES Products(ID) ON DELETE NO ACTION,
FOREIGN KEY (WarehousesID) REFERENCES Warehouses(ID) ON DELETE NO ACTION,
PRIMARY KEY (ID)
);

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 Products (ID, ProductName)
VALUES (2, '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,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, ProductID, WarehouseAmount, WarehousesID)
VALUES (1, 1, 2,1);
INSERT INTO ProductInventory (ID, ProductID, WarehouseAmount, WarehousesID)
VALUES (2,2, 5, 2);
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