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Apache Trafodion is an open-source project developed by the IT division of Hewlett-Packard Company and HP Labs to provide an enterprise-class transactional SQL-on-HBase solution targeting big data transactional or operational workloads.〔(【引用サイトリンク】 url=https://wiki.trafodion.org/wiki/index.php/Main_Page )〕 The project is named after the Welsh word for transactions.〔 ==Features== Trafodion is a database management system that runs on top of Hadoop,〔(【引用サイトリンク】 url=https://wiki.trafodion.org/wiki/index.php/Release_0.8.0_Features )〕 providing support for transactional or operational workloads in a big data environment.〔 The following is a list of key features: * ANSI SQL language support〔 * JDBC and ODBC connectivity for Linux and Windows clients〔 * Distributed ACID transaction protection across multiple statements, tables, and rows〔 * Compile-time and run-time optimizations for real-time operational workloads〔 * Support for large data sets using a parallel-aware query optimizer and a parallel data-flow execution engine〔 Transaction management features include: * Begin, commit, and rollback work syntax, including SET TRANSACTION〔 * READ COMMITTED transactional isolation level〔 * Multiple SQL processes participating in the same transaction concurrently〔 * Recovery after region server, transaction manager, or node failure〔 * Support for region splits and balancing〔 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「Trafodion」の詳細全文を読む スポンサード リンク
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