prolog - 使用 PROLOG 实现下表

Question

请帮我解决这些表格如下

product id     product name     quantity     unit price
   P01         Processor        50           8500
   P02         Hard Disk        50           4500
   P03         RAM              50           2500



Customer ID     Customer Name              Address
    C001        Saman Kumara               Galle Rd, Colombo 3
    C002        Gamini Silva               No 23,Nugegoda
    C003        Samantha Perera            Nawela Road,Nugegoda



Sales ID        Customer ID         Product ID  Quantity
    S01         C001                P01         10
    S02         C001                P02         5
    S03         C001                P03         3
    S04         C002                P01         2

标签： prolog

Answer 1

您应该为每个实体（表）引入扩展谓词作为 Prolog 事实：

% product(product_id, product_name, quantity, unit_price)
product('P01','Processor', 50,8500).
product('P02','Hard Disk', 50,4500).
product('P03','RAM',       50,2500).

etc etc

然后专注于完成作业所需的查询。