text: SHOW TABLES;
  
  CREATE TABLE `dumb_table` (
    `id` INT PRIMARY KEY AUTO_INCREMENT,
    `username` VARCHAR(20) NOT NULL,
    `password` VARCHAR(10) NOT NULL
  );
  
  CREATE TABLE `dict_unit` (
    `id` INT PRIMARY KEY,
    `name` VARCHAR(2) NOT NULL
  );
  
  create table `dict_structure`(
    `id` INT PRIMARY KEY AUTO_INCREMENT,
    `name` VARCHAR(20) NOT NULL
  );
  
  CREATE TABLE `biz_opcode` (
    `id` INT PRIMARY KEY,
    `name` VARCHAR(20) NOT NULL
  );
  
  CREATE TABLE `biz_instruction` (
    `id` INT PRIMARY KEY AUTO_INCREMENT,
    `name` VARCHAR(30) NOT NULL
  );
  
  CREATE TABLE `biz_instruction_code` (
    `id` INT PRIMARY KEY AUTO_INCREMENT,
    `instruction` VARCHAR(30) NOT NULL,
    `opcode` VARCHAR(20) NOT NULL,
    UNIQUE KEY `biz_instruction_code_uk` (`instruction`,`opcode`)
  );
  
  SHOW CREATE TABLE `biz_instruction_code`;
  
  
  
  