[英]entity framework code first migration keep existing data
I am using EF 6.1 and I use code first approach with an existing database with data in a production environment.我正在使用 EF 6.1,并且在生产环境中使用带有数据的现有数据库的代码优先方法。
Is it possible at all to migrate model changes and keep the existing customer`s data?是否有可能迁移模型更改并保留现有客户的数据?
Yes, however, it can be complicated depending on specific case (on complexity of changes):是的,但是,根据具体情况(更改的复杂性),它可能会很复杂:
Overview: https://docs.microsoft.com/en-us/ef/ef6/modeling/code-first/migrations/existing-database概述: https : //docs.microsoft.com/en-us/ef/ef6/modeling/code-first/migrations/existing-database
Read this: https://docs.microsoft.com/en-us/ef/ef6/modeling/code-first/migrations/index阅读: https : //docs.microsoft.com/en-us/ef/ef6/modeling/code-first/migrations/index
And then this: https://docs.microsoft.com/en-us/ef/ef6/modeling/code-first/migrations/teams然后这个: https : //docs.microsoft.com/en-us/ef/ef6/modeling/code-first/migrations/teams
Update: updated the links based on redirects.更新:更新基于重定向的链接。
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