我觉得我的商店有一个漏洞,因为我们没有一个可靠的过程来控制数据库模式更改的版本。我们做了很多备份,所以我们或多或少地得到了保护,但以这种方式依赖于最后一道防线是一种糟糕的做法。

令人惊讶的是,这似乎是一个共同的主线。与我交谈过的许多商店都忽略了这个问题,因为他们的数据库不会经常更改,他们基本上只是尽量做到一丝不苟。

不过,我知道这个故事是怎么发展的。这只是时间问题,迟早会出问题,会有东西丢失。

在这方面有什么最佳实践吗?你有哪些行之有效的策略?


当前回答

我所见过的最佳实践是创建一个构建脚本,在登台服务器上废弃并重新构建数据库。每次迭代都有一个用于数据库更改的文件夹,所有更改都用“Drop…创建“”。这样,您可以通过将构建指向您想要版本的文件夹,随时回滚到较早的版本。

我相信这是用NaNt/CruiseControl完成的。

其他回答

My team versions our database schema as C# classes with the rest of our code. We have a homegrown C# program (<500 lines of code) that reflects the classes and creates SQL commands to build, drop and update the database. After creating the database we run sqlmetal to generate a linq mapping, which is then compiled in another project that is used to generate test data. The whole things works really well because data access is checked at compile time. We like it because the schema is stored in a .cs file which is easy to track compare in trac/svn.

Sadly, I've seen more than one team developing PL/SQL programs (stored procedures in Oracle) - sometimes ten thousands LOC - just by editing the code in TOAD (a database tool), without even saving the source to files (except for deployment). Even if the database is backuped regulary (wouldn't take that for granted, though), the only way to retrieve an old version of a stored procedure is to restore the whole database, which is many GB large. And of course sometimes concurrent changes in one file lead to loss of work, when more than one developer works on the same project.

我相信每个DB都应该在源代码控制下,开发人员应该有一种简单的方法从头创建他们的本地数据库。受Visual Studio for Database Professionals的启发,我创建了一个开源工具,脚本MS SQL数据库,并提供了一种简单的方法将它们部署到您的本地DB引擎。试试http://dbsourcetools.codeplex.com/。玩得开心, -内森。

我通过保存创建/更新脚本和生成sampledata的脚本来完成。

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。