Data warehouse which is accessed by a user using a schema of virtual
tables
    1.
    发明授权
    Data warehouse which is accessed by a user using a schema of virtual tables 失效
    由用户使用虚拟表模式访问的数据仓库

    公开(公告)号:US5675785A

    公开(公告)日:1997-10-07

    申请号:US317437

    申请日:1994-10-04

    IPC分类号: G06F17/30

    摘要: A database warehouse includes a database having data arranged in data tables, e.g., fact tables and reference tables. A warehouse database hub interface is connected to the database. The warehouse database hub interface presents to a user a schema of the data in the database warehouse. The schema consists of virtual tables. Arrangement of the data in the virtual tables is different than arrangement of data in the fact tables and the reference tables. A user generates queries based on the schema provided by the warehouse database hub interface. In response to a such a query for particular information stored in the database warehouse, the warehouse database hub interface modifies the query to take into account pre-computed values and the arrangement of the data within the database warehouse. Then the warehouse database hub interface queries the database warehouse using the modified query to obtain the particular information from the database warehouse. Finally, the warehouse database hub interface forwards the particular information obtained from the database warehouse to the user.

    摘要翻译: 数据库仓库包括具有数据表中排列的数据的数据库,例如事实表和参考表。 仓库数据库集线器接口连接到数据库。 仓库数据库集线器接口向用户呈现数据库仓库中的数据模式。 该模式由虚拟表组成。 虚拟表中的数据的排列与事实表和参考表中的数据排列不同。 用户根据仓库数据库集线器接口提供的模式生成查询。 响应于对存储在数据库仓库中的特定信息的这种查询,仓库数据库中心接口修改查询以考虑预先计算的值和数据库仓库内的数据的排列。 然后仓库数据库集线器接口使用修改后的查询查询数据库仓库,从数据库仓库获取特定信息。 最后,仓库数据库中心接口将从数据库仓库获取的特定信息转发给用户。