MySQL 數據庫表設計是關系型數據庫設計中十分重要的一環。在設計數據庫表時，需要遵循以下原則：

1. 數據庫表應該具備唯一性：

CREATE TABLE table_name (
id INT PRIMARY KEY AUTO_INCREMENT,
unique_field VARCHAR(50) UNIQUE,
other_field VARCHAR(50)
);

2. 數據庫表應該避免冗余：

CREATE TABLE person (
person_id INT PRIMARY KEY,
first_name VARCHAR(50),
last_name VARCHAR(50),
age INT,
address VARCHAR(100),
city VARCHAR(50),
state VARCHAR(50),
zip_code INT
);
CREATE TABLE address (
address_id INT PRIMARY KEY,
address VARCHAR(100),
city VARCHAR(50),
state VARCHAR(50),
zip_code INT
);

3. 數據庫表應該根據用途分類：

CREATE TABLE customer (
customer_id INT PRIMARY KEY,
first_name VARCHAR(50),
last_name VARCHAR(50),
email VARCHAR(100)
);
CREATE TABLE order (
order_id INT PRIMARY KEY,
customer_id INT,
order_date DATE,
order_total DECIMAL(10,2),
FOREIGN KEY (customer_id) REFERENCES customer(customer_id)
);

4. 數據庫表應該具備可擴展性：

CREATE TABLE customer (
customer_id INT PRIMARY KEY,
first_name VARCHAR(50),
last_name VARCHAR(50),
email VARCHAR(100)
);
CREATE TABLE order (
order_id INT PRIMARY KEY,
customer_id INT,
order_date DATE,
order_total DECIMAL(10,2),
FOREIGN KEY (customer_id) REFERENCES customer(customer_id)
);
CREATE TABLE order_item (
order_item_id INT PRIMARY KEY,
order_id INT,
item_name VARCHAR(50),
quantity INT,
price DECIMAL(10,2),
FOREIGN KEY (order_id) REFERENCES order(order_id)
);

5. 數據庫表應該具備完整性：

CREATE TABLE customer (
customer_id INT PRIMARY KEY,
first_name VARCHAR(50) NOT NULL,
last_name VARCHAR(50) NOT NULL,
email VARCHAR(100) NOT NULL UNIQUE
);

通過遵循以上原則，在 MySQL 數據庫表的設計中能夠更加準確、高效地進行數據管理，提高數據處理的效率。