What is a logical data mapping and what does it mean to the ETL team?

什么是逻辑数据映射？它对ETL项目组的作用是什么？

[试题]What are the permissible data structures for the data staging area? Briefly describe the pros and cons of each.在数据准备区中允许使用的数据结构有哪些？各有什么优缺点？

[试题]What are the primary goals of the data discovery phase of the data warehouse project?在数据仓库项目中，数据探索阶段的主要目的是什么？

[试题]What are the four basic Data Flow steps of an ETL process?在ETL过程中四个基本的过程分别是什么？

[试题]what is IMO ?what is ISO 9000?what is ISM ?what is SMS system ?

[单选题]It is what you do rather than what you say ______matters.A． whatB． whenC． thatD． how

[试题]what do you know about “SOPEP”?what is VRP , and what is VCP ?

[试题]A． What do you mean B What about youC． I’m not sure D What a pityE． What do you think F Sounds greatG． Say, why don’t you come with us H Do you mean itJessica: I’m so excited! We have two weeks off! What are going to do?Natasha:__56__. I guess I’ll ju

[单选题]The problem withyour conduct is that what you do is not _____with what you

[单选题]What_____it is!A．beautiful stampB．a beautiful stampC．beautiful stampsD．beautiful a stamp

[试题]what are words 里面最好听的是那一句