The present disclosure relates to a method, apparatus and computer program product for managing datasets. According to example implementations of the present disclosure, there is provided a method for managing datasets. In the method, a first dataset comprising a first number of data elements and a second dataset comprising a second number of data elements may be obtained. The first number may be compared with the second number. One of the first dataset and the second dataset may be selected as a search dataset and the other may be selected as a traverse dataset based on a comparison result. The search dataset may be searched for a candidate data element, here the candidate data element has an association relation with a data element comprised in the traverse dataset. Further, there is provided an apparatus and computer program product for managing datasets.