FIELD: information technology.
SUBSTANCE: search engine creates a database index through a generating sampling of databases and uses this index to identify and create search requests in databases. The created index is called a domain attribute index and contains an index on the domain level and indices on the site level. The site level index for the database displays site attributes in defined attribute values in the data base. The domain level index displays attribute values in a pair of attributes for the database and site, which contain values of these attributes. To create a site level index for the database in a defined domain, the search engine begins with initial selection of sampling data for that domain. The search engine creates sampling requests based on the sampling data and sends the sampling requests to the database. The search engine updates the site level index based on sampling results and uses these results to create additional sampling requests.
EFFECT: more efficient search.
27 cl, 10 dwg
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