39 lines
1.4 KiB
SQL
39 lines
1.4 KiB
SQL
CREATE TABLE products (
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product_id INTEGER PRIMARY KEY, -- Unique ID for each product
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name VARCHAR(50), -- Name of the product
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price DECIMAL(10,2), -- Price of each unit of the product
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quantity INTEGER -- Current quantity in stock
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);
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CREATE TABLE customers (
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customer_id INTEGER PRIMARY KEY, -- Unique ID for each customer
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name VARCHAR(50), -- Name of the customer
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address VARCHAR(100) -- Mailing address of the customer
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);
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CREATE TABLE salespeople (
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salesperson_id INTEGER PRIMARY KEY, -- Unique ID for each salesperson
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name VARCHAR(50), -- Name of the salesperson
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region VARCHAR(50) -- Geographic sales region
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);
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CREATE TABLE sales (
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sale_id INTEGER PRIMARY KEY, -- Unique ID for each sale
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product_id INTEGER, -- ID of product sold
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customer_id INTEGER, -- ID of customer who made purchase
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salesperson_id INTEGER, -- ID of salesperson who made the sale
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sale_date DATE, -- Date the sale occurred
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quantity INTEGER -- Quantity of product sold
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);
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CREATE TABLE product_suppliers (
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supplier_id INTEGER PRIMARY KEY, -- Unique ID for each supplier
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product_id INTEGER, -- Product ID supplied
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supply_price DECIMAL(10,2) -- Unit price charged by supplier
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);
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-- sales.product_id can be joined with products.product_id
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-- sales.customer_id can be joined with customers.customer_id
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-- sales.salesperson_id can be joined with salespeople.salesperson_id
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-- product_suppliers.product_id can be joined with products.product_id
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