Normally, a one-to-one relation is found between a binding provider and an XML schema file which contains a few schema types for the custom binders to manage.
通常，xml脚本文件和绑定提供者间建立一对一的关系，xml脚本文件包含绑定提供者管理的脚本类型。
2
The log file pointed by the 'default' relation specifies how to perform logging in the absence of the above two explicit specifications.
default' 关系指向的日志文件指定在缺少前两个设置的情况下如何执行日志记录。
3
The kdc relation in the logging section points to the file that will be logged by the krb5kdc daemon while the admin_server relation points to the file that will be logged by the kadmind daemon.