Teiid是一个数据虚拟化系统，让应用程序使用来自多个异构数据存储的数据。
经过3个月的发行窗口后，我们正式宣布Teiid 8.4 发布了，最主要的三项值得关注的改进有：
发布平台更新到 EAP 6.1 Alpha，也可使用 EAP 6.1 Final
可插入式的基于行和列的安全特性
增加对 MongoDB 的支持
其他方面的改进有：
TEIID-2444 EAP Platform - the deployment platform for Teiid has been changed to EAP 6.1.Alpha1
TEIID-2429 Improved sort performance - improved sorts for large data sets especially under heavy load.
TEIID-2449 VDB Zips - added the ability to deploy non-Designer based vdb zip artifacts with the ability to place DDL outside of the VDB.xml via the DDL-FILE metadata repository.
TEIID-2423 TEIID-2470 Additional Embedded deployments - xml and zip vdb deployment options are available for Teiid Embedded.
TEIID-1092 Session Variables - added the teiid_session_set and teiid_session_get methods to maintain session variables.
TEIID-2326 Shared Mat Views - materialized views from imported vdbs will be reused rather than recreated in each importing vdb.
TEIID-2344 Automatic DB Version Detection - the JDBC translator database version property in most circumstances will not need to be set manually - see the compatibility note below.
TEIID-2453 STRING_AGG Added the string_agg aggregate function for concatenating binary and character strings.
TEIID-2504 Improved socket results processing large results processing over a socket transport have been significantly improved for forward only results. Scrollable results will have only a marginal improvement.
TEIID-2427 TEIID-2311 Column Masking added column masking and refined row-based security. Also allow for permissions to be granted via the MetadataFactory methods addPermission and addColumnPermisison to enable adding roles via a MetadataRepository.
TEIID-2507 Session scoped mat views - mat views can now be scoped to sessions via the cache hint, rather than to just the global scope.
TEIID-2329 MongoDB Support - added a mongodb translator/connector with a wide feature set including pushdown support for lobs, composite keys, and embedded joins. See the Reference for more.
下载地址：http://www.jboss.org/teiid/downloads.html
来自:开源中国社区
