This method is called by the common language runtime data access services.
此方法由公共语言运行时数据访问服务调用。
Data access services: These services are responsible for authorization, restrictions and logging access to data.
数据访问服务：这些服务负责数据访问授权、限制和日志记录。
Data access services: These services are responsible for authorization, restrictions and logging access to data.
数据访问服务：这些服务负责数据访问授权、限制和日志记录。
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