计算机论文数据库表降重指南

示例：数据库表优化前
CREATE TABLE student_info (
  id INT PRIMARY KEY,
  name VARCHAR(50),
  class_name VARCHAR(50),
  teacher_name VARCHAR(50)
);

示例：数据库表优化后
CREATE TABLE students (
  id INT PRIMARY KEY,
  name VARCHAR(50),
  class_id INT
);

CREATE TABLE classes (
  id INT PRIMARY KEY,
  name VARCHAR(50),
  teacher_id INT
);