What are the permissible data structures for the data staging area？ Briefly describe th

What is a logical data mapping and what does it mean to the ETL team？什么是逻辑数据映射

What are the primary goals of the data discovery phase of the data warehouse project？在

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

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

What are the essential deliverables of the data quality portion of ETL？ETL项目中的数据

What are the essential deliverables of the data quality portion of ETL？ETL项目中的数据