然而使用UML进行数据模型设计时，对数据库中的行为代码却缺乏有效的管理，不利于对其跟踪、扩展。

UML lacks, however, the sufficient management of behavior code in database, makes against tracing and extension, when using UML to design data model.

youdao

然而使用UML进行数据模型设计时，对数据库中的行为代码却缺乏有效的管理，不利于对其跟踪、扩展。

UML lacks, however, the sufficient management of behavior code in database, makes against tracing and extension, when using UML to design data model.

youdao