Proper usage of data modeling tools helps to avoid re-factoring of the application at later stages.
正确使用数据建模工具有助于避免在后续阶段重构应用程序。
Many data modeling tools, such as ERwin, don't offer the same degree of integration offered by Rational data Architect.
很多数据建模工具，例如ERwin，都无法像Rational Data Architect一样提供高度集成。
EMF is a modeling framework and code generation facility for building tools and other applications based on a structured data model.
EMF是用于基于结构化数据模型构建工具和其他应用程序的建模框架和代码生成工具。
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