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我有几个表：ingredients、customers、recipes和。menusrestaurants

条件是：ingredientsHABTM customers、recipesHABTM ingredients、menushasmanyrecipes和restaurantshasmany menus。

但是，当我尝试使用 cmd 控制台全部烘焙蛋糕时，自动创建的关系就像配料有许多客户_配料，客户有许多客户_配料和客户_配料属于客户和配料，而不是给配料有和属于许多客户。怎么了？表定义还是控制台？

在这里，我列出了我的创建表语句：

CREATE TABLE customers (
    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    cust_gname VARCHAR(20) NOT NULL,
    cust_fname VARCHAR(30) NOT NULL,
    cust_street VARCHAR(30) NOT NULL,
    cust_suburb VARCHAR(30) NOT NULL,
    cust_state VARCHAR(6) NOT NULL,
    cust_postcode VARCHAR(4) NOT NULL,
    cust_email VARCHAR(50) NOT NULL,
    cust_phone VARCHAR(12),
    cust_mobile VARCHAR(12)
);

CREATE TABLE restaurants (
    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(30),
    address1 VARCHAR(30),
    address2 VARCHAR(30),
    suburb VARCHAR(30),
    state VARCHAR(10),
    postcode VARCHAR(4)
);

CREATE TABLE ingredients (
    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(30)
);

CREATE TABLE menus (
    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    description VARCHAR(30),
    restaurant_id INT UNSIGNED,
    CONSTRAINT fk_restID FOREIGN KEY (restaurant_id) REFERENCES restaurants(id)
);

CREATE TABLE recipes (
    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(30),
    menu_id INT UNSIGNED,
    image VARCHAR(30),
    CONSTRAINT fk_menuID FOREIGN KEY (menu_id) REFERENCES menus(id)
);

CREATE TABLE ingredient_recipes (
    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    ingredient_id INT UNSIGNED,
    recipe_id INT UNSIGNED,
    CONSTRAINT fk_ingID FOREIGN KEY (ingredient_id) REFERENCES ingredients(id),
    CONSTRAINT fk_recID FOREIGN KEY (recipe_id) REFERENCES recipes(id)
);

CREATE TABLE customer_ingredients (
    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    customer_id INT UNSIGNED,
    ingredient_id INT UNSIGNED,
    CONSTRAINT fk_ingrID FOREIGN KEY (ingredient_id) REFERENCES ingredients(id),
    CONSTRAINT fk_cusID FOREIGN KEY (customer_id) REFERENCES customers(id)
);
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1 回答 1

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对于 HABTM 关系，名称约定希望两个名称都是复数：customers_ingredients和ingredients_recipes

于 2013-10-11T08:05:47.583 回答