| 摘要 |
<p>The present invention is directed to a method of maintaining a partially replicated database in such a way that updates made to a central database (11), or to another partially replicated database, are selectively propagated to the partially replicated database. Updates are propagated to a partially replicated database if the owner of the partially replicated database is deemed to have visibility to the data being updated. Visibility is determined by use of predetermined rules stored in a rules database. In one aspect of the invention, the stored rules are assessed against data content of various tables that make up a logical entity, known as a docking object (5), that is being updated. The stored rules are assessed against data content of a docking object that is not necessarily updated, but that is related to a docking object being updated. In another aspect, the visibility attributes of the related docking objects are recursively determined.</p> |
