A method for searching a database having data sets (Mi) which comprise attributes (A1i to Ani). If a search query (S) is captured, the data sets (Mi) are assigned relevance data (RSi) for the search query (S) and at least one subset of the data sets (Mi) is output on the basis of the relevance data (RSi). Relevance data (RSi) of the data sets (Mi) for the search query (S) are generated with the inclusion of correlation data (KS,1 to KS,n) and the attributes (A1i to Ani) of the data sets (Mi). A computer program having program code for carrying out the method according to the invention when the program code is executed by a computer, a search engine, and a system having a search engine.