若要利用这些功能，您应熟悉基于对象的编程的概念。
To take advantage of these features, you should be familiar with object-based programming concepts.
SDO 是用于各种格式数据的统一访问的基于对象的编程规范。
SDO is an object-based programming specification for uniform access to various forms of data.
Criteria API 支持使用基于对象的查询图以编程方式构建查询。
The Criteria API enables a programmatic construction of queries using an object-based query graph.
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