如抽象的,拼接的,情节性组合的等等。
更深入的概念,如抽象关联,或者抽象继承,也是RDL语言的一部分,但是本文将不作介绍。
Advanced concepts like abstract relations, or relation inheritance, are also part of the RDL language, but they will not be covered in this article.
将使用新的抽象,如服务数据对象(Service Data Object),隐藏与关系数据库这类数据源交互的复杂性。
New abstractions such as Service Data Objects will be used to hide the complexities of interacting with data source such as relational databases.
They talk a lot, as Sarah said, they talk a lot about abstract questions, and this puts the meaning of the story in that abstract register. Is it a love story, or is it a religious story, a mystifying story?
他们谈论了很多,如萨拉所说,他们谈论了很多,很抽象的问题,这使得这个故事,变得抽象了,这是个爱情故事吗,有的或者是个宗教故事,还是个神秘故事呢?
What we're really doing, or I shouldn't say what we're really doing, a basic piece of what we're doing, when we talk about classes or objects, is we're doing something that Professor Guttag mentioned, we're defining an abstract data type.
或者我不应该,说我们真正要做的,当我谈到类或者对象的时候,我们在做的基本的东西,如Guttag教授提到的,就是定义一个抽象数据类型,那么这到底是什么意思呢?
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