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What are the characteristics of the four levels of the ETL support model?简述ETL技术支 2019-08-06 State the primary types of tables found in a data warehouse and the order which they m 2019-08-06 Offer techniques for sharing business and technical metadata.Optimization/Operations简 2019-08-06 Share acceptable mechanisms for capturing operational metadata.简述获取操作型元数据的 2019-08-06 Describe the different types of ETL metadata and provide examples of each.举例说明各种 2019-08-06 How does late arriving data affect dimensions and facts? Share techniques for handling 2019-08-06 How are bridge tables delivered to classify groups of dimension records associated to 2019-08-06 Name the three fundamental fact grains and describe an ETL approach for each.简述三种 2019-08-06 Explain the three basic delivery steps for conformed dimensions.简述对一致性维度的三种 2019-08-06 Why do dates require special treatment during the ETL process?为什么在ETL的过程中需要 2019-08-06