1. A system ( 101 ) for identifying a particular data object of a data type in a database ( 104 ) comprising data objects of the data type, the system comprises: a query composition unit ( 102 ) for composing a search query to identify a candidate data object ( 206 , 207 , 501 ) being a candidate for the particular data object, a search unit ( 103 ) for identifying, based on the search query, the candidate data object ( 206 , 207 , 501 ) in the database, a presentation unit ( 105 ) for presenting the candidate data object ( 206 , 207 , 501 ) to the user, a feedback receiving unit ( 106 ) for receiving user feedback on the relevance or irrelevance of a segment ( 301 , 302 , 303 , 304 , 401 , 402 , 504 , 505 , 506 ) of the candidate data object ( 206 , 207 , 501 ), the search unit ( 103 ) being further constructed for identifying an improved candidate data object in response to the received user feedback, wherein the improved candidate data object is an improved candidate for the particular data object.