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1907120/DDL.sql

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+drop TABLE OrderDetails;
+drop table Orders;
+
+drop TABLE Inventory;
+drop table Customers;
+drop table Products;
+
+
+-- Create the Products table
+CREATE TABLE Products (
+  ProductID INT PRIMARY KEY,
+  ProductName VARCHAR(25),
+  ProductDescription VARCHAR(25),
+  ProductCategory VARCHAR(25),
+  ProductPrice DECIMAL(10, 2),
+  ProductImage VARCHAR(25),
+  QuantityInStock INT,
+  ReorderThreshold INT
+);
+
+-- Create the Customers table
+CREATE TABLE Customers (
+  CustomerID INT PRIMARY KEY,
+  FirstName VARCHAR(25),
+  LastName VARCHAR(25),
+  EmailAddress VARCHAR(25),
+  PhoneNumber VARCHAR(20),
+  ShippingAddress VARCHAR(25),
+  BillingAddress VARCHAR(25)
+);
+
+-- Create the Orders table
+CREATE TABLE Orders (
+  OrderID INT PRIMARY KEY,
+  CustomerID INT,
+  OrderDate DATE,
+  OrderTotal DECIMAL(10, 2),
+  FOREIGN KEY (CustomerID) REFERENCES Customers(CustomerID)
+);
+
+-- Create the OrderDetails table
+CREATE TABLE OrderDetails (
+  OrderDetailID INT PRIMARY KEY,
+  OrderID INT,
+  ProductID INT,
+  Quantity INT,
+  Price DECIMAL(10, 2),
+  FOREIGN KEY (OrderID) REFERENCES Orders(OrderID),
+  FOREIGN KEY (ProductID) REFERENCES Products(ProductID)
+);
+
+-- Create the Inventory table
+CREATE TABLE Inventory (
+  ProductID INT,
+  WarehouseID INT,
+  QuantityInStock INT,
+  PRIMARY KEY (ProductID, WarehouseID),
+  FOREIGN KEY (ProductID) REFERENCES Products(ProductID)
+);
+
+
+select * from OrderDetails;
+select * from Inventory;
+
+alter table Inventory add location char(20);
+alter table Inventory modify location varchar(23);
+alter table Inventory rename column location to location2;

1907120/DML.sql

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+-- Insert data into the Products table
+INSERT INTO Products VALUES (1, 'Product A', 'Description A', 'Category A', 9.99, 'image_a.jpg', 10, 5);
+INSERT INTO Products VALUES (2, 'Product B', 'Description B', 'Category B', 19.99, 'image_b.jpg', 15, 8);
+INSERT INTO Products VALUES (3, 'Product C', 'Description C', 'Category A', 14.99, 'image_c.jpg', 5, 2);
+INSERT INTO Products VALUES (4, 'Product D', 'Description D', 'Category C', 24.99, 'image_d.jpg', 20, 10); 
+INSERT INTO Products VALUES (5, 'Product E', 'Description E', 'Category B', 12.99, 'image_e.jpg', 12, 6);
+
+-- Insert data into the Customers table
+INSERT INTO Customers VALUES (1, 'John', 'Doe', 'john@example.com', '1234567890', '123 Shipping St', '123 Billing St');
+INSERT INTO Customers VALUES       (2, 'Jane', 'Smith', 'jane@example.com', '9876543210', '456 Shipping St', '456 Billing St');
+ INSERT INTO Customers VALUES      (3, 'Michael', 'Johnson', 'michael@example.com', '5555555555', '789 Shipping St', '789 Billing St');
+INSERT INTO Customers VALUES       (4, 'Emily', 'Brown', 'emily@example.com', '1111111111', '987 Shipping St', '987 Billing St');
+ INSERT INTO Customers VALUES      (5, 'David', 'Davis', 'david@example.com', '2222222222', '654 Shipping St', '654 Billing St');
+
+-- Insert data into the Orders table
+INSERT INTO Orders VALUES (1, 1,TO_DATE('2023-03-10', 'YYYY-MM-DD'), 29.99);
+INSERT INTO Orders VALUES  (2, 2,TO_DATE('2023-01-02', 'YYYY-MM-DD'), 45.99);
+ INSERT INTO Orders VALUES (3, 3,TO_DATE('2023-04-20', 'YYYY-MM-DD'), 19.99);
+ INSERT INTO Orders VALUES (4, 4, TO_DATE('2023-03-13', 'YYYY-MM-DD'), 32.99);
+ INSERT INTO Orders VALUES (5, 5, TO_DATE('2023-03-10', 'YYYY-MM-DD'), 27.99);
+
+-- Insert data into the OrderDetails table
+INSERT INTO OrderDetails VALUES (1, 1, 1, 2, 9.99);
+INSERT INTO OrderDetails VALUES  (2, 1, 3, 1, 14.99);
+INSERT INTO OrderDetails VALUES  (3, 2, 2, 3, 19.99);
+ INSERT INTO OrderDetails VALUES (4, 3, 5, 1, 12.99);
+ INSERT INTO OrderDetails VALUES (5, 4, 4, 2, 24.99);
+
+-- Insert data into the Inventory table
+INSERT INTO Inventory VALUES (1, 1, 8, 'Dhaka');
+
+INSERT INTO Inventory VALUES       (2, 1, 12, 'Chittagong');
+
+ INSERT INTO Inventory VALUES      (3, 1, 5, 'rajshahi');
+
+ INSERT INTO Inventory VALUES      (4, 1, 18, 'Khulna');
+
+ INSERT INTO Inventory VALUES      (5, 1, 10, 'Barisal');
+
+
+--join
+SELECT i.ProductID, p.ProductName, i.QuantityInStock
+FROM Inventory i
+JOIN Products p ON i.ProductID = p.ProductID;
+
+--aggregation
+SELECT ProductID, SUM(QuantityInStock) AS TotalQuantity
+FROM Inventory
+GROUP BY ProductID;
+
+--retrieve the total quantity of a product in stock:
+SELECT ProductID, SUM(QuantityInStock) AS TotalQuantity
+FROM Inventory
+GROUP BY ProductID;

1907120/PL_SQL.sql

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+-- Create a PL/SQL block
+set serveroutput on
+DECLARE
+  -- Declare a cursor
+  CURSOR product_cursor IS
+    SELECT ProductID, ProductName, ProductPrice
+    FROM Products;
+
+  -- Declare variables to store cursor data
+  product_id Products.ProductID%TYPE;
+  product_name Products.ProductName%TYPE;
+  product_price Products.ProductPrice%TYPE;
+BEGIN
+  -- Open the cursor
+  OPEN product_cursor;
+
+  -- Fetch data from the cursor
+  LOOP
+    FETCH product_cursor INTO product_id, product_name, product_price;
+    EXIT WHEN product_cursor%NOTFOUND;
+
+    -- Perform some operations with the fetched data
+    -- For example, print the product details
+    DBMS_OUTPUT.PUT_LINE('Product ID: ' || product_id);
+    DBMS_OUTPUT.PUT_LINE('Product Name: ' || product_name);
+    DBMS_OUTPUT.PUT_LINE('Product Price: ' || product_price);
+    DBMS_OUTPUT.PUT_LINE('-------------------');
+  END LOOP;
+
+  -- Close the cursor
+  CLOSE product_cursor;
+END;
+/