In DM every property and relationship is declared in the model, and that is used as the authoritative source rather than the database.

在DM中，每一个属性和关系都是在模型中声明，然后作为可信的来源使用，而不是需要将这些属性关系存储到数据库中。

youdao

IFX_XASPEC only applies to XA connections and cannot be specified in a database URL. It can be specified by data source or by setting a system property (of the JVM) with the same name.

IFX_XASPEC仅适用于xa连接，不能在数据库url中指定，但可以通过数据源指定它，或者通过使用相同名称设置(JVM的)系统属性来指定。

youdao

If there are database manipulating nodes then promote the data source name property as it might not be same across various environments (development, test, production, etc).

如果有数据操作节点，则请提升数据源名称属性，因为此属性在各个环境(开发、测试、生产等)中可能并不相同。

youdao