查询语法是面向对象的，并且没有了表、索引或其他典型的对象关系型数据库的概念。
The query syntax is object oriented and there is no concept of tables, indices, or other typical relational-database concepts. For example, the following query returns all StockBean objects in a list.
本教程假设您理解关系型数据库的常规操作并且熟悉基本的J2EE概念，例如，部署描述符和war归档。
This tutorial assumes that you understand the general operations of a relational database and are familiar with basic Java EE concepts, such as deployment descriptors and WAR archives.
事件存储器从概念上讲比全功能的关系型数据库解决方案要更简单，而且他可以很容易地从内存中的事件集合扩展到全功能的事件存储器。
Event stores are conceptually simpler than full RDBMS solutions, and it's easy to scale up from an in-memory list of events to a full-featured event store.
第二章的开端引见了关系型数据库的根本概念，着重阐明了几个关键概念的定义。
The beginning of the second chapter introduces the basic concept of a relational database, the focus on a few key definition of the concept.
第二章的开端引见了关系型数据库的根本概念，着重阐明了几个关键概念的定义。
The beginning of the second chapter introduces the basic concept of a relational database, the focus on a few key definition of the concept.
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