A new kind of data model has recently emerged in which the database is not constrained by
a conventional schema. Systems like ACeDB, which has become very popular with …

We present a new principle for the development of database query languages that the
primitive operations should be organized around types. Viewing a relational database as …

Domain-specific embedded languages (DSELs) expressed in higher-order, typed (HOT)
languages provide a composable framework for domain-specific abstractions. Such a …

This paper presents structural recursion as the basis of the syntax and semantics of query
languages for semistructured data and XML. We describe a simple and powerful query …

Abstract Persistent Application Systems (PASs) are of increasing social and economic
importance. They have the potential to be long-lived, concurrently accessed, and consist of …

Vast amounts of life sciences data are scattered around the world in the form of a variety of
heterogeneous data sources. The need to be able to co-relate relevant information is …

This paper describes an efficient optimistic concurrency control scheme for use in distributed
database systems in which objects are cached and manipulated at client machines while …

Modern analytics applications use a diverse mix of libraries and functions. Unfortunately,
there is no optimization across these libraries, resulting in performance penalties as high as …

Deciding query equivalence is an important problem in data management with many
practical applications. Solving the problem, however, is not an easy task. While there has …

The integrated access to heterogeneous data sources is a major challenge for the
biomedical community. Several solution strategies have been explored: link-driven …