| 摘要 |
<p>Articles of manufacture and methods are described. Specifically, the methods include constructing category structures within a database, classifying a data item within a database, and facilitating location of a data item within a database are described. A first method includes defining, in a database, a first structure of categories and an alternative second structure of categories to provide an alternative classification of a data item. A second method includes classifying a data item in a first hierarchy of categories and a second alternative hierarchy of categories. A third method includes locating a data item responsive to identifying of a link between a first hierarchy of categories and a second alternative hierarchy of categories.</p> |
