Method and system for indexing and search databases.

摘要

Method and system for indexing and search databases.A search system generates an index database, amostrando productively databases, and uses this index to identify and formulate queries to search in the database.The index generated is referred to as an index field attribute and contains an index field - level and the local level indices.A local index - nu00ednel for a database maps local attributes for different attribute values in the database.The index field - level for an area maps attribute values to pairs of database and the local attributes containing those attribute values.To generate a local index - level for a database within a certain area, the system search starts with an initial set of sample data for that domain.The search system generates sampling queries based on the data of the sample and subjecting the sample queries to a database.The search system updates the local index - level based on the results of sampling, and uses the results to generate more consultation of sampling.