使用PROLOG实现以下表格

Question

请帮助我解决这些表，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

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。