空间数据引擎是实现海量空间数据存储和管理的解决方案。

Spatial data engine as a solving project is helpful to realize the mass spatial data's storage and management.

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本发明提供了具有低花费、高性能、高可用性和高可扩展性的空间数据存储与管理方案。

The invention provides a space data storage and management scheme with low-cost, high-performance, strong-usability and high-expandability.

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文章首先叙述了空间数据存储管理的历程，并比较了各阶段的优缺点，然后重点分析了空间数据引擎(SDE)这一关键技术。

In this paper we present the phylogeny of storage and management of spatial data and compare shortcoming and virtue and then especially analyses the SDEs work.

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This is convention, so on almost-- and most any computer you overuse, if you're writing code that uses a char, you're gonna be handed 8 bits or 1 byte to store that particular char.

这是约定，对于大多数-,电脑，当你写代码要用到一个char型数据时,必须先预留8比特或1字节,的空间来存储这个char型数据。

哈佛公开课 - 计算机科学课程节选

And I don't quite remember from reading or from class how big these things are, well, it turns out -- and this is sometimes useful, later on more likely than now -- but C has a size of operator that takes an argument in parenthesis and it will tell you how much space is used to store that particular data type.

我不太记得类中的这些类型,是多大的，嗯，结果是--这个在以后比现在，可能是更有用的--不过C语言中有个sizeof的操作符,其中括号里有一个参数,它会告诉我们，要存储一个类型的数据,需要占用多大空间。

哈佛公开课 - 计算机科学课程节选