摘要: MSN上朋友做EDS中国的网申,问我这样两道数据库题,很简单,但我看了半天,觉得这题出得实在很不清楚:Which one is used to maintain one to many relationship between two tables? A. Primary Key B. Foreign Key C. Middle table D. Composite Key 7. Which o... 阅读全文
posted @ 2006-11-23 23:11 丁丁 阅读(1053) 评论(6) 推荐(0) 编辑