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Perst
Perst is an open source, dual license, object-oriented embedded database management system (ODBMS). Both the Java programming language, and the C# programming language versions are compact and Perst has been implemented on smart phones running the Android and Windows Phone (WP7) operating systems.
==History==
Perst was launched in 2003, in Russia. It was designed to achieve high-performance by tightly integrating the database with the programming language: Perst directly stores data in the language objects. In 2006 McObject LLC, based in Issaquah, WA took over the development of Perst. It continues to offer free downloads and has added commercial license options.
Perst was first written in Java, and ported to C#. Although originally designed for desktop- and server-based software, Perst has also found usage in providing database management for mobile applications running on devices such as smartphones. These mobile devices typically have hardware constraints, with limited RAM and few CPU cycles available and non-standard (for database systems) operating requirements (such as support for Java ME, or Silverlight in the Windows Phone 7 mobile platform).〔See, for example, “Building a database for Windows Phone 7 qualifies as epic,” from Brandon Watson, Microsoft Director of Developer Experience for Windows Phone 7, in his blog post (Windows Phone 7 Device Requests, 6/17/2010 ).〕〔Database duo deliver Windows Phone 7 apps storage, (The Register, 6/30/2010 ).〕〔Embedded database engine for Silverlight applications, (Architecture + Strategy blog, MSDN ).〕〔Developing an object-oriented database for J2ME-based embedded devices. (EE Times, 12/14/2006 ). This article discusses the technical challenges that had to be overcome in Java ME (J2ME) in order to support an ODBMS in that environment.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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