Alessandra Raffaetà is an assistant professor at Ca’ Foscari University of Venice. She graduated in Computer Science (summa cum laude) in 1994 and she took a PhD in Computer Science in 2000 from the University of Pisa. Her research interests include Data warehouses, GISs, spatio- temporal reasoning, design and formal semantics of programming languages and constraint logic programming. She participated to several national and international research projects and she has published over 60 papers on international journals and conferences. She was co-chair of the workshop Complex Reasoning on Geographical Data (2001) and she was member of the program committee of several international workshops and conferences.