| 摘要 |
A method, computer program, and database system are disclosed for querying a stored element-based document description. The database system includes one or more nodes. Each of the one or more nodes provides access to one or more of a plurality of CPUs. Each of the one or more CPUs provides access to one or more of a plurality of virtual processes. Each virtual process is configured to manage data stored in one of a plurality of data-storage facilities. The data stored in the plurality of data-storage facilities includes data representing a database table. A row of the table corresponds to an element of the element-based document description and includes: data describing the element, an order identifier corresponding to the element, and a range identifier corresponding to the element. The data stored in the plurality of data-storage facilities also includes a tag table with one or more rows including tags and table location data. A query execution program in configured to receive a query specifying at least one tag, compare one of the specified tags with the tag table, identify at least one row of the tag table corresponding to the specified tag, read table location data from the at least one row of the tag table, and output a query response including information from one or more database table rows corresponding to the table location data, each database table row including an order identifier and a range identifier.
|
