常驻部分存储数据库服务器运行时大小固定的数据结构，它具有下列几个部分

The resident portion stores data structures that do not change in size while the database server is running, it has the following parts

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HANA构建在SAP具有悠久历史的技术的超集上，包括MaxDB数据库和TREX常驻内存引擎。

HANA is built on a superset of technologies with a long history at SAP, including the MaxDB database and TREX in-memory engine.

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它通过将数据库的“工作版本”常驻内存，利用内存快速的存取速度，使系统性能获得很大的改善。

By letting the main operating part of the database reside constantly in the main memory, and utilizing the quick access speed, the system performance is greatly enhanced.

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