Proceedings, thirteenth International Conference on Scientific and Statistical Database Management, SSDBM 2001, Fairfax, Virginia, 18-20 July, 2001 - International Conference on Scientific and Statistical Database Systems; Kerschberg, Larry; Kafatos, Minas C.; George Mason University. Center for Earth Observing and Space Research; George Mason University. Center for Information Systems Integration and Evolution; George Mason University. E-Center for E-Business; ACM Special Interest Group for the Management of Data; IEEE Computer Society. Technical Committee on Database Engineering; VLDB Endowment (IEEE Computer Society, 2001)