Where the target model is spread across multiple tables, the data Gap Analysis must also consider data keys and key relationships to effectively link data elements together.
如果目标模型跨多个表，数据差异分析还必须考虑数据键和键关系，以便有效地链接数据元素。
After collecting business requirements and researching the business and data environment, you can perform gap analysis.
在收集业务需求并研究业务和数据环境之后，您就可以执行差异分析了。
The gap analysis is important, because it is the basis for your data warehouse project proposal and design.
差异分析十分重要，因为它是您数据仓库项目建议和设计的基础。
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