| 摘要 |
An alternative form of database architecture is described, comprising a plurality of data items, and a plurality of hierarchical node structures, wherein each data item is stored together with relationship data detailing nodes in one or more of the hierarchical node structures with which the data item is associated. The relationship data can be stored as a Boolean expression acting on node values. User identity can be associated with at least one node in one or more of the hierarchical node structures. Child nodes can inherit an association with a data item from a parent node. This can then be embodied as (for example) a novel and useful computer system, or a standalone data storage system accessible by other computer systems, or as a programmed data carrier able to impart the architecture to such a system.
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