是的，当然。每当有更改时，我们生成PostgreSQL模式的转储并签入。它已经救了我们很多次，而我才上任几个月。

I've heard people say you absolutely have to keep your schemas in the database. I'm not sure I agree. This really depends on the system you're working with. If your system is relatively small and the data is not terribly important. And the the speed at which you need to bring another development environment online is crucial.. then yes.. you can benefit from it. However when your schema is useless without the data and the database is extremely large, it becomes virtually impossible to "source control" your database. Sure, you can still keep your DDL code in source control but that's essentially useless. You can't get the data needed without backup/restore.

在大型数据库开发工作中，我发现备份和恢复是首选的回滚选项。当然，你可以在源代码控制中保留过程、视图、函数等，但要保留表。SQL不是必需的。此外，如果您的部署过程是无懈可击的，那么您很可能永远不需要“回滚”您的生产环境。

我们有一个每周的sql转储到一个颠覆回购。这是完全自动化的，但这是一项非常繁重的任务。

你会想要限制修改的数量，因为它真的会在一段时间后消耗磁盘空间!

The most successful scheme I've ever used on a project has combined backups and differential SQL files. Basically we would take a backup of our db after every release and do an SQL dump so that we could create a blank schema from scratch if we needed to as well. Then anytime you needed to make a change to the DB you would add an alter scrip to the sql directory under version control. We would always prefix a sequence number or date to the file name so the first change would be something like 01_add_created_on_column.sql, and the next script would be 02_added_customers_index. Our CI machine would check for these and run them sequentially on a fresh copy of the db that had been restored from the backup.

我们还准备了一些脚本，开发人员可以用一个命令将本地db重新初始化到当前版本。

我使用SchemaBank来版本控制我所有的数据库模式更改:

从第一天开始，我将我的db模式转储导入其中 我开始用网络浏览器改变我的模式设计(因为它们是基于SaaS /云的) 当我想更新我的db服务器时，我从它生成更改(SQL)脚本并应用到db。在Schemabank中，它们要求我在生成更新脚本之前将工作提交为版本。我喜欢这种练习，这样当我需要的时候，我就可以随时追溯。

我们的团队规则是，在没有存储设计工作之前，永远不要直接接触db服务器。但它发生了，有人可能会被诱惑打破规则，为了方便。我们将再次将模式转储导入到模式银行中，并让它执行diff，如果发现不一致，则对某人进行攻击。虽然我们可以从它生成alter脚本，使我们的db和模式设计同步，但我们讨厌这样做。

顺便说一下，它们还允许我们在版本控制树中创建分支，这样我就可以维护一个用于登台，一个用于生产。还有一个用于编码沙盒。

一个非常整洁的基于web的模式设计工具，带有版本控制和变更管理。

You should never just log in and start entering "ALTER TABLE" commands to change a production database. The project I'm on has database on every customer site, and so every change to the database is made in two places, a dump file that is used to create a new database on a new customer site, and an update file that is run on every update which checks your current database version number against the highest number in the file, and updates your database in place. So for instance, the last couple of updates:

if [ $VERSION \< '8.0.108' ] ; then
  psql -U cosuser $dbName << EOF8.0.108
    BEGIN TRANSACTION;
    --
    -- Remove foreign key that shouldn't have been there.
    -- PCR:35665
    --
    ALTER TABLE     migratorjobitems
    DROP CONSTRAINT migratorjobitems_destcmaid_fkey;
    -- 
    -- Increment the version
    UPDATE          sys_info
    SET             value = '8.0.108'
    WHERE           key = 'DB VERSION';
    END TRANSACTION;
EOF8.0.108
fi

if [ $VERSION \< '8.0.109' ] ; then
  psql -U cosuser $dbName << EOF8.0.109
    BEGIN TRANSACTION;
    --
    -- I missed a couple of cases when I changed the legacy playlist
    -- from reporting showplaylistidnum to playlistidnum
    --
    ALTER TABLE     featureidrequestkdcs
    DROP CONSTRAINT featureidrequestkdcs_cosfeatureid_fkey;
    ALTER TABLE     featureidrequestkdcs
    ADD CONSTRAINT  featureidrequestkdcs_cosfeatureid_fkey
    FOREIGN KEY     (cosfeatureid)
    REFERENCES      playlist(playlistidnum)
    ON DELETE       CASCADE;
    --
    ALTER TABLE     ticket_system_ids
    DROP CONSTRAINT ticket_system_ids_showplaylistidnum_fkey;
    ALTER TABLE     ticket_system_ids
    RENAME          showplaylistidnum
    TO              playlistidnum;
    ALTER TABLE     ticket_system_ids
    ADD CONSTRAINT  ticket_system_ids_playlistidnum_fkey
    FOREIGN KEY     (playlistidnum)
    REFERENCES      playlist(playlistidnum)
    ON DELETE       CASCADE;
    -- 
    -- Increment the version
    UPDATE          sys_info
    SET             value = '8.0.109'
    WHERE           key = 'DB VERSION';
    END TRANSACTION;
EOF8.0.109
fi

我相信有更好的方法来做到这一点，但到目前为止，它对我来说是有效的。