期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
利用D2R实现关系数据库与关联数据的语义模式映射 被引量:31
1
作者 白海燕 梁冰 《现代图书情报技术》 CSSCI 北大核心 2011年第7期1-7,共7页
关系型数据库和关联数据的概念模型都基于现实世界的实体、属性及其关系而构建,具备建立映射和实现转换的可能性。两者语义模式映射的重点是关联关系的构建与表达。开源软件D2R的映射语言,通过核心要素ClassMap、PropertyBridge及其属性... 关系型数据库和关联数据的概念模型都基于现实世界的实体、属性及其关系而构建,具备建立映射和实现转换的可能性。两者语义模式映射的重点是关联关系的构建与表达。开源软件D2R的映射语言,通过核心要素ClassMap、PropertyBridge及其属性,支持关系数据库的SQL实现,支持将关系数据库不同实体之间、同一实体内部及与外部数据的关联关系构建为RDF链接。 展开更多
关键词 D2R 关联数据 语义模式映射
原文传递
The Application of Schema Theory to Teaching Listening Comprehension of College English
2
作者 YuXia Fan 《International Journal of Technology Management》 2013年第11期6-8,共3页
Listening is the most important and different skill among the fbur basic language skills---listening, speaking, reading and writing. Schema theory holds the view that listeners' background knowledge plays a key role ... Listening is the most important and different skill among the fbur basic language skills---listening, speaking, reading and writing. Schema theory holds the view that listeners' background knowledge plays a key role in understanding a new text. Applying schema theory to teaching listening comprehension, the author introduces the "three-stage" teaching mode. Activating the existing schemata and building the related semantic map in the pre-listening stage, bettering the semantic map in while-listening stage, and practicing the newly-existed schemata in post-listening stage can make all the teaching procedures a whole, and make students feel much easier to understand the listening materials. 展开更多
关键词 listening comprehension schema theory three-stage teaching mode
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部