首页>
外国专利>
Computer database matching a user query to queries indicating the contents of individual database tables
Computer database matching a user query to queries indicating the contents of individual database tables
展开▼
机译:将用户查询与指示单个数据库表内容的查询匹配的计算机数据库
展开▼
页面导航
摘要
著录项
相似文献
摘要
A database system that provides independence between the query and physical structure of the database tables by captioning each database table with a partial query reflecting the contents of that table. In particular, the partial query is a query that if applied to a larger database of a standard configuration would produce the data of the table. Relevant tables for a particular query may be identified by piecing together the partial queries until the user query is obtained. The database system may be integrated with an optimizer by comparing each of the identified tables against the others for the amount of overlap their sub-queries have with the user query and the cost of accessing the table and then repeating this process as the tables are joined in various combinations.
展开▼