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| author | Yves Senn <yves.senn@gmail.com> | 2014-03-26 09:06:31 +0100 |
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| committer | Yves Senn <yves.senn@gmail.com> | 2014-03-26 09:06:31 +0100 |
| commit | dcda6e32b4496f11bf6e43fddc5772376ac0f9b2 (patch) | |
| tree | ad2e45e134881b5479cb8f9544e7d82807f22b33 | |
| parent | 470108b6e95a32e017ba3790d5701d8c8e91bf29 (diff) | |
| download | rails-dcda6e32b4496f11bf6e43fddc5772376ac0f9b2.tar.gz rails-dcda6e32b4496f11bf6e43fddc5772376ac0f9b2.tar.bz2 rails-dcda6e32b4496f11bf6e43fddc5772376ac0f9b2.zip | |
link to "Schema migration" Wikipedia page. Closes #14479. [ci skip]
| -rw-r--r-- | guides/source/migrations.md | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/guides/source/migrations.md b/guides/source/migrations.md index 05443d5a5f..bfee55a95d 100644 --- a/guides/source/migrations.md +++ b/guides/source/migrations.md @@ -18,9 +18,10 @@ After reading this guide, you will know: Migration Overview ------------------ -Migrations are a convenient way to alter your database schema over time in a -consistent and easy way. They use a Ruby DSL so that you don't have to write -SQL by hand, allowing your schema and changes to be database independent. +Migrations are a convenient way to +[alter your database schema over time](http://en.wikipedia.org/wiki/Schema_migration) +in a consistent and easy way. They use a Ruby DSL so that you don't have to +write SQL by hand, allowing your schema and changes to be database independent. You can think of each migration as being a new 'version' of the database. A schema starts off with nothing in it, and each migration modifies it to add or |