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1. 发明授权

US5625818A System for managing local database updates published to different online information services in different formats from a central platform 失效
公开(公告)号：US5625818A
公开(公告)日：1997-04-29
申请号：US706956
申请日：1996-09-03
申请人： Craig Zarmer , Anne Jones , Kevin M. Arnold , Paul S. Chambers , Tom Eastwood , Ruth A. Helfinstein , Jason E. Rusoff , Hal Wine
发明人： Craig Zarmer , Anne Jones , Kevin M. Arnold , Paul S. Chambers , Tom Eastwood , Ruth A. Helfinstein , Jason E. Rusoff , Hal Wine
IPC分类号： G06F17/30
CPC分类号： G06F17/3089 , Y10S707/99939 , Y10S707/99945 , Y10S707/99948
摘要： The present invention, generally speaking, provides a powerful yet easy to use electronic publishing tool for information providers and online service operators. The electronic publishing tool allows information providers to manage the content they provide to online services. It also reduces the effort required by operations staff of online services to support a growing number of information providers. Finally, the electronic publishing tool allows content to be captured from information providers (and, by extension, subscribers) so that it can be published onto a variety of platforms with minimal additional effort. For example information, in addition to or in lieu of being published on an online service, may be published on CD through a facility such as AppleLink CD (AppleLink CD allows a portion of the "static" content of an online service such as AppleLink to be published and distributed in CD form, with the result that the content is infinitely reusable without incurring connect charges.) Furthermore, information previously published on one online service may be published on one or more other online services, or information may be published on several online services at the same time. A number of potentially "thorny" problems of distributed database systems are solved in an elegant and efficient manner. The first issue involves synchronizing different copies of an item on machines that are not continuously linked at which each copy may be changed independently. Rather than attempting to formulate a set of synchronization policies generally applicable to all items in all instances, synchronization policies are moved from the database engine to the items themselves. The second issue involves lifetime--knowing, given a complex set of interrelationship of items, when an item may be safely deleted. This problem is addressed by providing an interested party mechanism whereby items may "express interest" in each other. When no item is interested in a particular item, that item may safely "go away."

2. 发明授权

US5684984A Synchronization and replication of object databases 失效
标题翻译：对象数据库的同步和复制
公开(公告)号：US5684984A
公开(公告)日：1997-11-04
申请号：US314951
申请日：1994-09-29
申请人： Anne Jones , Craig Zarmer
发明人： Anne Jones , Craig Zarmer
IPC分类号： G06F17/30
CPC分类号： G06F17/30581 , Y10S707/966 , Y10S707/99943
摘要： The present invention, generally speaking, provides a method of synchronizing information between a plurality of sites and a central location that solves number of potentially "thorny" problems of distributed database systems in an elegant and efficient manner. The first issue involves sychronizing different copies of an item on machines that are not continuously linked at which each copy may be changed independently. Rather than attempting to formulate a set of synchronization policies generally applicable to all items in all instances, synchronization policies are moved from the database engine to the items themselves. The second issue involves lifetime--knowing, given a complex set of interrelationship of items, when an item may be safely deleted. This problem is addressed by providing an interested party mechanism whereby items may "express interest" in each other. When no item is interested in a particular item, that item may safely "go away".
摘要翻译：本发明一般地提供了一种在多个站点和中心位置之间同步信息的方法，其以优雅和有效的方式解决分布式数据库系统的潜在“棘手”问题的数量。第一个问题涉及在不连续链接的机器上同步不同的项目副本，每个副本可以独立地更改。而不是试图制定一套通用于所有实例中的所有项目的同步策略，同步策略将从数据库引擎移动到项目本身。第二个问题涉及生命周期知识，给定一个复杂的项目的相互关系，当一个项目可以被安全地删除。这个问题是通过提供一个利益相关方的机制来解决的，因为这些机制可以使项目彼此“表达兴趣”。当没有项目对特定项目感兴趣时，该项目可能会安全地“离开”。

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