xref: /webtrees/app/Schema/MigrationInterface.php (revision 2836aa05d87d478edc3ef1f1983e9d37862ded10)
1<?php
2namespace Fisharebest\Webtrees\Schema;
3
4/**
5 * webtrees: online genealogy
6 * Copyright (C) 2015 webtrees development team
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19/**
20 * Interface MigrationInterface - upgrade/downgrade the database schema.
21 */
22interface MigrationInterface {
23	/**
24	 * Upgrade to to the next version
25	 */
26	public function upgrade();
27}
28