This paper presents a framework for data integration that is based on using “Squirrel
integration mediators” that use materialization to support integrated views over multiple …

Traditional database systems provide a user with the ability to query and manipulate one
database state, namely the current database state. However, in several emerging …

Support for virtual states and deltas between them is useful for a variety of database
applications, including hypothetical database access, version management, simulation, and …

In many applications, the representation and management of change is of primary interest,
often being as important as the representation and management of state. The concurrency …

There are many applications which arise in telecommunications information processing in
which it is useful, and often necessary, to create and access multiple hypothetical states …

At the time of this writing, the electronic commerce market place is dominated by business-to-
business transactions. This paper describes one such application and our software …

This paper presents a framework for data integration that is based on using\Squirrel
integration mediators" that use materialization to support integrated views over multiple …

The database programming language Heraclitus [Alg, C] is an extension of the C
programming language that supports the relational algebra and novel constructs related to …