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My research work covers over three decades (1976-2015) and has been generally concerned with extending database technologies in order to incorporate new features: distribution, object-orientation, rules, streaming data; with the advent of the Web, my research has been targeted towards the engineering of Web-based applications and search systems. More recently I turned to crowdsearching and to genomic computing.
My work has always been part of projects, sponsored by Italian and European funding agencies. My thesis on Distributed Database Architectures (1978) was part of the Datanet Project of CNR and led to the offering of the first course on this subject (at Stanford University, 1983-1990) and to the  book "Distributed Databases: Principles and Systems", McGraw-Hill 1984, with Giuseppe Pelagatti (the first book on the subject). Part of the research on this topic was performed at Stanford University.
My work on Dataid Project of CNR led to the book "Conceptual Database Design", Benjamin-Cummings 1992, with Carlo Batini and Sham Navathe. My work on deductive databases led to the book "Logic Programming and Databases", Springer-Verlag 1990, with Georg Gottlob and Letizia Tanca. My work on active databases led to the book "Active Database Systems", Morgan-Kaufmann 1995, with Jennifer Widom. Part of the research on this topic was performed at IBM Almaden.
My work on the IDEA project (funded by the EU), combining object-orientation and active rules, led to the book "Designing Database Applications with Objects and Rules: the IDEA Project" (1997), with Piero Fraternali and Stefano Paraboschi.
My work on the W3I3 and WebSI projects (funded by the EU) led to the design of the WebML Model (US Patent 6,951,271, July 2003), to the founding of Web Models, a PoliMi spinoff selling the product Webratio (now hiring about 30 employees), and led to the book "Designing Data Intensive Web Applications" with Piero Fraternali, Marco Brambilla, Aldo Bongio, Sara Comai, Maristella Matera (Morgan-Kauffman, 2002).
In 2008 I have been awarded an advanced ERC Grant on Search Computing (2.5 MEuro funding, November 2008 - October 2013). The project is described in the Web Site and in three books published by Springer-Verlag: "Search Computing - Challenges and Directions" (Springer LNCS 5950) provides a unified view of the results of the first year of the project and of the first SeCo Workshop held in May 2009 [more...]; "Search Computing - Trends and Developments" (Springer LNCS 6585) collects the outcomes of the second year of the project and of the second SeCo Workshop held in May 2010. [more...]; "Search Computing - Structured Integration of Web Data Sources" (Springer LNCS 7538) collects the outcomes of the third year of the project and of the several Workshops held in 2011: ExploreWeb at ICWE 2011, Very Large Data Search at VLDB 2011, DBRank also at VLDB 2011, DATAVIEW at ECOWS 2011, and OrdRing at ISWC 2011. [more...]. Search computing research is also described in the Spinger book: Web Information Retrieval.
I also worked on Crowdsearcher - a platform for generating reactive and interoperable crowdsearch applications over social networks (Facebook, Twitter, LinkedIn) and crowdsourcing systems (Amazon Turk), and more recently I developed an interest on Data Science, working in particular on Social Analytics, i.e. how to analyze data from social networks such as Facebook, Twitter, LinkedIn, Instagram. 
My current interest is on genomic data management. I started to work on genomics in 2012, thanks to a cooperation with IEO-IIT. I was the coordinator of GenData 2020 - focused on building query and data analysis systems for genomic data as produced by fast DNA sequencing technology, where I am the National Coordinator of a Prin Project (Feb. 2013 - Jan. 2016) and co-operate with IEO-IIT (Prof. P. Pelicci, Dr. H. Muller). In 2016, I was awarded my second advanced ERC Grant on Data-Driven Genomic Computing (2.5 MEuro funding, September 2016 - August 2021). The project is described in the Web Site.
Many terrific people contributed to my research career. I would like to mention, among others: Giuseppe Pelagatti, Gio Wiederhold, Sham Navathe, Carlo Batini, Georg Gottlob, Letizia Tanca, Jennifer Widom, Joachim Schmidt. I was inspired by my masters, Sergio Rinaldi and Jim Gray. With Piero Fraternali and Stefano Paraboschi, we have been a very "prolific publishing trio" throughout more than a decade. With Piero Fraternali I co-founded WebRatio and did most of my recent research projects. My current work on crowdsearching is done with Marco Brambilla, my current work on genomic computing is done with Marco Masseroli and Heiko Muller.