注意到关键词match指出了领域中的一些元素，比如列表4中的schema .tables，被允许保持不匹配。

Note that the match keyword indicates that some elements of the domain, such as schema.tables in Listing 4, are allowed to be left unmatched.

youdao

为了防止没有带有前缀的匹配关键词的情况（比如列表4中的model.ownedMember）出现，集合中所有类型符合的元素都必须通过关联UmlClass2Table进行映射。

In case there is no prefixed match keyword (for instance, model.ownedMember in Listing 4), then every type-conforming element of the collection must be mapped by the relation UmlClass2Table.

youdao

为了防止没有带有前缀的匹配关键词的情况（比如列表4中的model.ownedMember）出现，集合中所有类型符合的元素都必须通过关联UmlClass2Table进行映射。

In case there is no prefixed match keyword (for instance, model.ownedMember in Listing 4), then every type-conforming element of the collection must be mapped by the relation UmlClass2Table.

youdao