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The Indexed Database API, or IndexedDB (formerly WebSimpleDB), is a recommended web browser standard interface for a local database of records holding simple values and hierarchical objects. IndexedDB was initially proposed by Oracle in 2009. IndexedDB could be used for browser implemented functions, such as bookmarks, as well as web applications, such as email. An open-source reference implementation of the Indexed Database API exists for testing and experimentation purposes. Preliminary support for IndexedDB is included by Firefox (since version 4), Google Chrome (since version 11), and by Internet Explorer 10 Consumer Preview and Metro style apps. Apple announced forthcoming support in Safari 8 for both iOS 8 and Mac OS X at their WWDC 2014 Keynote on June 2, 2014. Safari, Chrome 4, and Opera support an alternate mechanism for client-side database storage called Web SQL Database. On November 18, 2010, the W3C announced that the Web SQL database specification has reached an impasse and is no longer being actively worked on.〔(【引用サイトリンク】title=W3C Working Group Note 18 November 2010 )〕 Firefox developers have publicly stated that the lack of WebSQL Database support in Firefox is on purpose, as they believe it is a problematic standard which requires an alternative (hence IndexedDB). ==See also== * HTML5 * Web SQL Database (competing, deprecated standard) * Web Storage (simpler standard for smaller amounts of data without indices) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Indexed Database API」の詳細全文を読む スポンサード リンク
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