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dbとprogrammingに関するsnomofのブックマーク (2)
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I have a Comment class with a :foreign_key of post_id in the Post class. class Comment < ActiveRecord::Base belongs_to :post, :class_name => "Post", :foreign_key => "post_id", :counter_cache => true belongs_to :author, :class_name => "User", :foreign_key => "author_id" end But my CreateComments migration does not define a database-level foreign key: class CreateComments < ActiveRecord::Migration d
snomof
2012/10/27
●ruby
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●DB
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473 users
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www.publickey1.jp
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軽量なリレーショナルデータベースとして人気のSQLite。そのWebサイトに掲載されている﹁How SQLite Is Tested﹂の内容が、海外のプログラマなどのあいだで話題になっています。3月に公開された最新バージョンのSQLite 3.6.23。本体のソースコードは約6万7200行︵67.2KSLOC、Kilo Source Lines of Code‥空行やコメントを除いた行数︶なのに対し、テストコードはなんと4567万8300行︵45678.3KSLOC︶だと紹介されているのです！ これはテストコードが本体の約679倍もの大きさだということになります。 100％のブランチカバレッジ SQLiteコアのライブラリをテストするテストコードとして、以下の3つが紹介されています。 TCL Tests TCL Testsはもっとも古いテストコードで、TCL scripting lang
snomof
2012/10/14
●sqlite
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設定を変更しましたx
Defining foreign key relationships for Rails' models
SQLiteのテストコードは4567万8000行！ 本体のコードは6万7000行