| 词条 | Link contract |
| 释义 |
A link contract is an approach to data control in a distributed data sharing network. Link contracts are a key feature of the XDI specifications under development at OASIS. In XDI, a link contract is a machine-readable XDI document that governs the sharing of other XDI data. Unlike a conventional Web link, which is essentially a one-dimensional "string" that "pulls" a linked document into a browser, a link contract is a graph of metadata (typically in JSON) that can actively control the flow of data from a publisher to a subscriber by either "push" or "pull". The flow is controlled by the terms of the contract, which can be as flexible and extensible as real-world contracts, i.e., link contracts can govern:
Like real-world contracts, link contracts can also refer to other link contracts. Using this design, the vast majority of link contracts can be very simple, referring to a very small number of more complex link contracts that have been carefully designed to reflect the requirements of common data exchange scenarios (e.g., business cards, mailing lists, e-commerce transactions, website registrations, etc.) Link contracts have been proposed as a key element of digital trust frameworks such as those published by the non-profit Open Identity Exchange. See also
External links
2 : XML-based standards|Web services |
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