数据源层 meaning in Chinese
data source tier
Examples
- Jdbc 3 . 0 frees the developer from this concern because the data source layer is now responsible for caching prepared statements
Jdbc 3 . 0让开发人员不再为此担心,因为数据源层现在负责为预备语句进行缓存。 - The author divides the middle ware into three parts : source data controlling part , middle data document , aiming data controlling part . the middle ware uses the scheme of middle data source : taking data out of the source data table ; then , restoring the source data into the middle data document to reorganize these data and making them acceptable to the aiming data table ; finally , putting these organized data into the aiming data table . additionally , in the designing , the author writes the data types contrasting tables of heterogeneous databases by xml ( extensible markup language ) documents , and uses the xml document as middle data source
本文主要阐述了在异构数据库之间进行数据传输中间件的设计和研究:把中间件设计成三层结构,即:源数据控制层、中间数据源层、目的数据控制层;并采用中间数据源的解决方案,从源数据表中读出数据,经过中间数据文档的中转传送到目的数据表中;在该系统中,使用xml ( extensiblemarkuplanguage ,扩展标记语言)文档来设计各数据库与xml之间的数据类型映射表,并使用xml文档作为中间数据源;对xml文档的结构定义使用xmlschema ;使用jdbc - odbc桥来连接数据库,并对数据库进行操作。