Sample migration for L3.

create_users_table.php

<?php

class Create_Users_Table {

  /**
   * Make changes to the database.
   *
   * @return void
   */
  public function up() {
    Schema::create('users', function($t) {
      $t->integer('ruid')->unsigned();
      $t->string('netid', 100)->unique();
      $t->string('email', 100)->unique();
      $t->string('name', 50);
      $t->string('password', 100);
      $t->timestamps();

      $t->primary('ruid');
    });
  }

  /**
   * Revert the changes to the database.
   *
   * @return void
   */
  public function down() {
    Schema::drop('users');
  }

}