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。
Teiid由一堆工具，组件和创建和执行双向数据的服务所组成。通过抽象和联合、数据存取和集成的实时分布式数据源，无需进行复制或以其他方式移动数据系统的纪录。
简而言之：Teiid 可以让你用 JDBC + SQL 来访问企业的任何数据，并可对这些不同源的数据进行联合查询。
Teiid 8.5 正式版发布了，值得关注的改进有：
TEIID-2528 Encrypted Buffer Files - the buffer manager now supports an option to encrypt Teiid temp data files using 128-bit AES.
TEIID-2249 Dependent Join Enhancements -
TEIID-2559 greater control over full depdendent join pushdown has been added including make dep hint options max/join to control the extent of depdendent join pushdown.
TEIID-2555 the join hint enables the pushdown the entire dependent join when supported by the source.
TEIID-2558 JDBC translator support to dependent join pushdown for a broad set of sources including Oracle, PostgreSQL, MySQL, SQLServer, Sybase, etc. use the enableDependentJoins translator property.
See the Reference for more.
TEIID-2527 Configurable Runtime Multisource - the server will now allow multisource models to have sources added and removed at runtime. See the admin addSource and removeSource methods.
TEIID-2571 Broader Must Pushdown - must pushdown functions tied to a particular model that supports selects without from can now be called without at any time.
TEIID-2572 Function native-query - source functions for most translators now support the native-query extension metadata property to specify alternative syntax.
TEIID-2067 Global temporary tables - may now be declared that are backed by Teiid session specific instance tables. See the Reference for more.
TEIID-2443 Simple aggregate rollup - added support for a single ROLLUP grouping element to produce multiple levels of aggregation. See the Reference for more.
TEIID-2614 Anonymous procedure blocks - anonymous procedure blocks may be used as statements. See the Reference for more.
TEIID-247 Expanded array support - adding parsing and JDBC and other support for arrays. See the Reference for more. Note that this support should be considered a tech preview and will be expanded/refined over subsequent releases.
TEIID-2584 Materialization management - added a tech preview of management routines for external materialized views including scheduled refresh via extension metadata properties.
此外该版本解决了总共 108 个问题，包含重要的 Teiid 过程和 OData 产品问题。
官方首页：http://www.jboss.org/teiid
免费下载：http://www.jboss.org/teiid/downloads.html
来自:开源中国社区
