One of the secrets of success for mapping objects to relational databases is to understand both paradigms and their differences, and then make intelligent trade-offs based on that knowledge.

使对象-关系数据库之间的映射成功的一个秘诀就是理解这两种范例和它们的差异，然后基于这些认识来进行明智的取舍。

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Of course you need the basic it skills of data design and architecture, database administration, Structured Query Language (SQL) scripting, data repository mapping, and business domain knowledge.

当然，您需要数据设计和架构、数据库管理、结构化查询语言(Structured Query Language, SQL)、脚本、数据存储库映射和业务领域知识等基本IT技能。

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By mapping this gas, Welsh said we were filling in major blanks in our knowledge about the galaxy.

通过将星际气体分部绘制成地图，我们填补了关于银河系知识的主要空白，Welsh说。

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With generous support from the Government of Norway, a major initiative is being undertaken in the North West Frontier province, based on mapping out cultural resources, knowledge systems, from traditional arts and crafts to agricultural practices.

UNESCO: CULTURE