DataLink

This FAIRsharing record describes: The DataLink specification defines mechanisms for connecting metadata about discovered datasets to the data, related data products, and web services that can act upon the data. DataLink is a data access protocol in the IVOA architecture whose purpose is to provide a mechanism to link resources found via one service to resources provided by other services. The web service capability supports a drill-down into the details of a specific dataset and provides a set of links to the dataset file(s) and related resources. This specification also includes a VOTable-specific method of providing descriptions of one or more services and their input(s), usually using parameter values from elsewhere in the VOTable document. Providers are able to describe services that are relevant to the records (usually datasets with identifiers) by including service descriptors in a result document.

本FAIRsharing记录所阐述的内容如下：
数据链接（DataLink）规范定义了将已发现数据集的元数据，关联至该数据集、相关数据产品以及可对该数据执行操作的Web服务的相关机制。
数据链接（DataLink）是国际虚拟天文台联盟（IVOA）架构下的一种数据访问协议，其核心目的是提供一种机制，用于将通过某一服务发现的资源与其他服务提供的资源进行关联。
该Web服务能力支持对特定数据集的详情进行下钻查询，并提供指向数据集文件及相关资源的一组链接。
本规范还包含一种针对虚拟天文台表格（VOTable）的专用方法，用于描述一个或多个服务及其输入项，该方法通常会使用该VOTable文档其他位置的参数值。
服务提供商可通过在结果文档中嵌入服务描述符，来描述与相关记录（通常为带标识符的数据集）相关的服务。