The World Wide Web as a Database Alberto Mendelzon Department of Computer Science University of Toronto We explore a simple relational model of the Web intended to support declarative queries. We present a query language, WebSQL, that helps automate web navigation and search, and discuss its use as a Java application development tool. We then describe the beginnings of a theory of query computability and complexity motivated by this language. Finally, we sketch the design of a new query language, WebOQL, that takes advantage of a richer Web model. Alberto Mendelzon, Professor of Computer Science, University of Toronto, has been with the department since 1980. He received his MA, MSE, and PhD degrees from Princeton University. He has been a visiting scientist at the IBM Centre for Advanced Studies, AT&T Bell Laboratories, NTT Basic Research Labs, and the IASI in Rome. He has chaired or cochaired the Program Committees of the ACM Principles of Database Systems Symposium (1991), International Conference on Very Large Databases (1992), and the International Symposium on Deductive and Object-Oriented Databses (1995), as well as General Chair of the ACM Principles of Database Symposium for 1997 and 1998. He is also the current chair of the NSERC Grant Selection Committee in Computing and Information Science. He is on the Editorial board of the Journal of Digital Libraries.