这是因为对象的泄漏数据结构和有效对象缓存通常不好区别。

This is because leaking data structures and valid caches of objects are often indistinguishable.

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此外，通用XML数据结构可以改进电子商务参与方之间的集成，更有效地交换订单、库存信息和发货细节。

Additionally, a common XML data structure can improve the integration between e-commerce players, allowing them to trade orders, stock information, and shipping details more efficiently.

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为了是数据模型更加有效，它必须足够简单以使最终用户能够沟通必需的数据结构，同时它也要足够详细以使数据库设计人员能够创建物理结构。

To be effective, it must be simple enough to communicate the required data structure to the end user, yet detailed enough that the database designer can create the physical structure.

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In Week 2 we'll look at things like cryptography and functions and the tools that by which you begin to assemble solutions to problems; in Week 3 we'll introduce what are generally ; known as algorithms and data structures; mechanisms by which you can solve problems more efficiently, effectively.

第2周,我们学习加密技术及其功能,还会学到一些操作工具,通过这些工具的使用来收集解决问题的办法,第3周,我们将介绍;,算法和数据结构,以及可以更有效地解决问题的机制。

哈佛公开课 - 计算机科学课程节选