Ralph Kimball处理慢速变化维的方法
摘要：
One major difference between an OLTP system and a data warehouse is the ability to accurately describe the past. OLTP systems are usually very poor at correctly representing a business as of a month o... 阅读全文
posted @ 2004-11-06 18:45 Chech 阅读(662) 评论(0) 推荐(0) 编辑