摘要：The relational data model has simple and clear foundations on which significant theoretical and systems research has flourished. By contrast, most research...

原文链接:http://dl.acm.org/citation.cfm?id=1189770

送人玫瑰，手留余香~如您已下载到该资源，可在回帖当中上传与大家共享，欢迎来CDA社区交流学习。（仅供学术交流用。）