數據虛擬化系統 Teiid 7.6 Alpha1 發布

Teiid是一個數據虛擬化系統，讓應用程序使用來自多個異構數據存儲的數據。

Teiid由一堆工具，組件和創建和執行雙向數據的服務所組成。通過抽象和聯合、數據存取和集成的實時分布式數據源，無需進行復制或以其他方式移動數據系統的紀錄。
項目地址：http://www.jboss.org/teiid

7.6 Alpha1 發布了，與 7.5 比較，改進內容：

• Procedure language features - Added support for compound/block statements, BEGIN [[NOT] ATOMIC], loop/block labels, and the leave statement. See the reference for more.
• File Enhancements - the file translator can now optionally (via the ExceptionIfFileNotFound property) throw an exception if the path refers to a file that doesn't exist. The file resource adapter can be configured to map file names and can prevent parent path .. references. See the Admin Guide or the file-ds.xml template for more.
• TEXTTABLE Enhancements - TEXTTABLE can now parse fixed width files that do not use a row delimiter and can optionally produce fixed values that haven't been trimmed.
• Temp table transactions - Internal materialized views and temp table usage from a session and within procedures can take advantage of greater transaction support.
• Buffering Improvements - Added the ability to inline memory based or small lobs and added tracking of the memory held by soft references. Also switched to a LFRU algorithm that significantly reduces writes and read misses with temporary tables.
• GSSAPI - both the Teiid JDBC client/server and the ODBC pg backend can now support GSSAPI for single sign-on. (this is in the documentation, but not yet in the release notes as it has yet to be tested).