What are the characteristics of the four levels of the ETL support model?简述ETL技术支持工作的四个级别的特点。
What are the characteristics of the four levels of the ETL support model?
简述ETL技术支持工作的四个级别的特点。
相关考题:
Name the three fundamental fact grains and describe an ETL approach for each.简述三种基本事实表,并说明ETL的过程中如何处理它们。
What steps do you take to determine the bottleneck of a slow running ETL process?如果ETL进程运行较慢,需要分哪几步去找到ETL系统的瓶颈问题。
Explain the different real-time approaches and how they can be applied in different business scenarios.简述几种不同的实时ETL实现方法以及它们的适用范围。
Outline some challenges faced by real-time ETL and describe how to overcome them.简述实时ETL的一些难点及其解决办法。
数据仓库的数据ETL过程中,ETL分别是哪几个过程?A.数据抽取B.数据稽核C.数据转换D.数据装载