Therefore, DB2 as a proven relational engine with a cutting-edge optimizer is insufficiently exploited. 因此,虽然已经证明DB2是带有最前沿优化器的关系引擎(RE),但它并没有得到充分利用。
Apache Derby, an Apache DB project, is a lightweight, embeddable, relational engine in the form of a Java class library. ApacheDerby是一个ApacheDB项目,它是一种Java类库形式的轻量级、可嵌入的关系引擎(RE)。
The choice of an optimal execution plan as well as the efficient processing of data sets by the full-function DB2 relational database engine is responsible for much of the savings in elapsed time and CPU. 大部分节省下来的执行时间和CPU时间要归功于最佳执行计划的选择,以及功能完整的DB2关系数据库引擎对数据集的有效的处理。
Cartographer is a simple, efficient object relational mapper engine. It provides rapid access to relational data using lightweight data and factory java objects. 这是个简单、效的对象-关系映射工具。它使用轻量级数据和工厂对象实现对关系数据的快速访问。
In addition to extending the scope of the initial transformation stage, federation is also able to improve on the efficiency of the stage since at its core, it is a relational database engine with more than 30 years investment in efficiently filtering and joining data sets. 除了扩展原有转换阶段的范围外,联邦还可以提高各阶段的效率,因为其核心是在有效过滤和连接数据集方面有30多年投资的关系数据库引擎。