CREATE TABLE teacher_mst (
  teacher_no INT NOT NULL,
  teacher_name VARCHAR(255) NOT NULL,
  obtained_no INT NULL,
  delete_ku CHAR(1) NOT NULL,
  insert_at DATETIME NOT NULL,
  update_at DATETIME NOT NULL,

  PRIMARY KEY (teacher_no)
);

CREATE TABLE student_mst (
  student_no INT NOT NULL,
  student_name VARCHAR(255) NOT NULL,
  delete_ku CHAR(1) NOT NULL,
  insert_at DATETIME NOT NULL,
  update_at DATETIME NOT NULL,

  PRIMARY KEY (student_no)
);
