Method and apparatus for linking data in a distributed data processing system
US6973656B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1995 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Aug 16, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/27
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for implementing “links” between objects or content items in applications or documents in a distributed system such that changes to the source objects or items are reflected in changes to the target objects or content items. The apparatus includes mechanisms for allowing users to establish links, to break individual links, to copy documents or content including links, and to determine locations and/or descriptions of the source of a given target or any or all of the multiple targets of a given source.Advantageously, the apparatus of this invention uses remote message passing for communication, thereby permitting links to be established even when the source and target applications execute on different platforms and even when they share no common file system.The apparatus includes an availability server which can serve as a surrogate for applications which are currently not running. This permits targets of links to query the state of a link source, to register/unregister with the link source in order to receive notification of updates, create new links linked to the same link source, and to break their link to the link source, even though the application containing the l…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.