New Principles for Information Integration
              Laura Haas, IBM Almaden Research Center

Ten years ago, Clio introduced nonprocedural schema mappings to
describe the relationship between data in heterogeneous schemas. This
enabled powerful tools for mapping discovery and integration code
generation, greatly simplifying the integration process. However,
further progress is needed. We see an opportunity to raise the level
of abstraction further, and propose two new principles that the next
generation of integration systems should embody. "Holistic information
integration" supports iteration across the various integration tasks,
leveraging information about both schema and data to improve the
integrated result. "Integration independence" allows applications to
be independent of how, when, and where information integration takes
place, making materialization and the timing of transformations an
optimization decision that is transparent to applications. This talk
introduces these principles and describes through an example how they
would help with an integration task.